diff --git a/lib/ui/routes/conversation_message_stats_route.dart b/lib/ui/routes/conversation_message_stats_route.dart
index 38328d1..ae9edfd 100644
--- a/lib/ui/routes/conversation_message_stats_route.dart
+++ b/lib/ui/routes/conversation_message_stats_route.dart
@@ -21,9 +21,7 @@ class ConversationMessageStatsRoute extends StatefulWidget {
     Key? key,
     required this.conv,
     required this.message,
-  })  : assert(conv != null),
-        assert(message != null),
-        super(key: key);
+  })  : super(key: key);
 
   @override
   _ConversationMessageStatsRouteState createState() =>
diff --git a/lib/ui/routes/conversation_route.dart b/lib/ui/routes/conversation_route.dart
index 7dd19bb..b1dc064 100644
--- a/lib/ui/routes/conversation_route.dart
+++ b/lib/ui/routes/conversation_route.dart
@@ -21,8 +21,7 @@ class ConversationRoute extends StatefulWidget {
   const ConversationRoute({
     Key? key,
     required this.conversationID,
-  })  : assert(conversationID != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   State<StatefulWidget> createState() => _ConversationRouteState();
@@ -69,7 +68,7 @@ class _ConversationRouteState extends SafeState<ConversationRoute> {
 
   Widget _buildRouteBody() {
     //Handle errors
-    if (_error != null && _error)
+    if (_error)
       return buildErrorCard(
         tr("Could not get conversation information!"),
         actions: <Widget>[
diff --git a/lib/ui/routes/forez_presence_settings_route.dart b/lib/ui/routes/forez_presence_settings_route.dart
index 123e01a..60088bb 100644
--- a/lib/ui/routes/forez_presence_settings_route.dart
+++ b/lib/ui/routes/forez_presence_settings_route.dart
@@ -26,8 +26,7 @@ class PresenceSettings extends StatefulWidget {
   const PresenceSettings({
     Key? key,
     required this.groupID,
-  })  : assert(groupID != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _PresenceSettingsState createState() => _PresenceSettingsState();
diff --git a/lib/ui/routes/forgot_password_route.dart b/lib/ui/routes/forgot_password_route.dart
index 242cc00..579751a 100644
--- a/lib/ui/routes/forgot_password_route.dart
+++ b/lib/ui/routes/forgot_password_route.dart
@@ -82,8 +82,6 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
       case _SelectedOption.SECURITY_QUESTIONS:
         return _buildSecurityQuestionsScreen();
     }
-
-    throw Exception("Unreachable statement!");
   }
 
   Widget _buildEnterEmailAddressScreen() {
@@ -120,7 +118,7 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
       _setLoading(true);
 
       // Check if email address exists or not
-      if (!await AccountHelper.existsMailAccount(_inputEmail) ) {
+      if (!await AccountHelper.existsMailAccount(_inputEmail)) {
         _setLoading(false);
         showSimpleSnack(context, tr("Specified email address was not found!")!);
         return;
@@ -169,7 +167,8 @@ class _ResetPasswordBodyState extends SafeState<_ResetPasswordBody> {
         context: context,
         builder: (c) => AlertDialog(
               title: Text("Contact us"),
-              content: Text(tr("You can reach us at contact@communiquons.org")!),
+              content:
+                  Text(tr("You can reach us at contact@communiquons.org")!),
               actions: <Widget>[CancelDialogButton()],
             ));
   }
diff --git a/lib/ui/routes/full_screen_image.dart b/lib/ui/routes/full_screen_image.dart
index ebb0291..c568c6d 100644
--- a/lib/ui/routes/full_screen_image.dart
+++ b/lib/ui/routes/full_screen_image.dart
@@ -11,7 +11,7 @@ import 'package:url_launcher/url_launcher.dart';
 class FullScreenImageRoute extends StatefulWidget {
   final String url;
 
-  FullScreenImageRoute(this.url) : assert(url != null);
+  FullScreenImageRoute(this.url);
 
   @override
   _FullScreenImageRouteState createState() => _FullScreenImageRouteState();
diff --git a/lib/ui/routes/main_route/page_info.dart b/lib/ui/routes/main_route/page_info.dart
index f4e3d96..9585d27 100644
--- a/lib/ui/routes/main_route/page_info.dart
+++ b/lib/ui/routes/main_route/page_info.dart
@@ -31,8 +31,5 @@ class PageInfo {
     this.id,
     this.hideNavBar = false,
     this.canShowAsDialog = false,
-  })  : assert(type != null),
-        assert(child != null),
-        assert(hideNavBar != null),
-        assert(canShowAsDialog != null);
+  });
 }
diff --git a/lib/ui/routes/password_reset_route.dart b/lib/ui/routes/password_reset_route.dart
index 3f2f2a8..a2c8e20 100644
--- a/lib/ui/routes/password_reset_route.dart
+++ b/lib/ui/routes/password_reset_route.dart
@@ -19,8 +19,7 @@ class PasswordResetRoute extends StatelessWidget {
   const PasswordResetRoute({
     Key? key,
     required this.token,
-  })  : assert(token != null),
-        super(key: key);
+  })  : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -39,8 +38,7 @@ class _PasswordResetBody extends StatefulWidget {
   final String token;
 
   const _PasswordResetBody({Key? key, required this.token})
-      : assert(token != null),
-        super(key: key);
+      : super(key: key);
 
   @override
   __PasswordResetBodyState createState() => __PasswordResetBodyState();
diff --git a/lib/ui/routes/push_notifications_route.dart b/lib/ui/routes/push_notifications_route.dart
index ea861d0..89c988c 100644
--- a/lib/ui/routes/push_notifications_route.dart
+++ b/lib/ui/routes/push_notifications_route.dart
@@ -140,7 +140,7 @@ class PushNotificationsConfigurationWidgetState
                   srvConfig!.notificationsPolicy.hasIndependent && isAndroid,
               onChanged: (s) {
                 setState(() => currStatus = s);
-                if (widget.onChanged != null) widget.onChanged();
+                widget.onChanged();
               },
             ),
             SizedBox(height: 5),
@@ -151,7 +151,7 @@ class PushNotificationsConfigurationWidgetState
               available: true,
               onChanged: (s) {
                 setState(() => currStatus = s);
-                if (widget.onChanged != null) widget.onChanged();
+                widget.onChanged();
               },
             ),
           ],
@@ -195,12 +195,7 @@ class _NotificationOption extends StatelessWidget {
     required this.current,
     required this.available,
     required this.onChanged,
-  })  : assert(title != null),
-        assert(option != null),
-        assert(current != null),
-        assert(available != null),
-        assert(onChanged != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) => !available
diff --git a/lib/ui/routes/settings/account_privacy_settings.dart b/lib/ui/routes/settings/account_privacy_settings.dart
index 6ee4145..e05314c 100644
--- a/lib/ui/routes/settings/account_privacy_settings.dart
+++ b/lib/ui/routes/settings/account_privacy_settings.dart
@@ -180,9 +180,7 @@ class DataConservationPolicyTile extends SettingsTile {
     required this.title,
     required this.onChange,
     required this.minValue,
-  })  : assert(title != null),
-        assert(onChange != null),
-        assert(minValue != null);
+  });
 
   @override
   Widget build(BuildContext context) {
diff --git a/lib/ui/routes/settings/account_security_settings.dart b/lib/ui/routes/settings/account_security_settings.dart
index 22ee0e9..0c6a914 100644
--- a/lib/ui/routes/settings/account_security_settings.dart
+++ b/lib/ui/routes/settings/account_security_settings.dart
@@ -140,8 +140,7 @@ class _SecurityQuestionsDialog extends StatefulWidget {
   final SecuritySettings settings;
 
   const _SecurityQuestionsDialog({Key? key, required this.settings})
-      : assert(settings != null),
-        super(key: key);
+      : super(key: key);
 
   @override
   __SecurityQuestionsDialogState createState() =>
diff --git a/lib/ui/routes/settings/account_settings_route.dart b/lib/ui/routes/settings/account_settings_route.dart
index 5011775..04758a6 100644
--- a/lib/ui/routes/settings/account_settings_route.dart
+++ b/lib/ui/routes/settings/account_settings_route.dart
@@ -31,10 +31,7 @@ class _SettingsSection {
     required this.subtitle,
     required this.icon,
     required this.onBuild,
-  })  : assert(title != null),
-        assert(subtitle != null),
-        assert(icon != null),
-        assert(onBuild != null);
+  });
 }
 
 class AccountSettingsRoute extends StatelessWidget {
diff --git a/lib/ui/routes/single_post_route.dart b/lib/ui/routes/single_post_route.dart
index 709e2a8..6bdb6ea 100644
--- a/lib/ui/routes/single_post_route.dart
+++ b/lib/ui/routes/single_post_route.dart
@@ -14,8 +14,7 @@ class SinglePostRoute extends StatelessWidget {
   const SinglePostRoute({
     Key? key,
     required this.postID,
-  })  : assert(postID != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -34,8 +33,7 @@ class _SinglePostRouteBody extends StatefulWidget {
   const _SinglePostRouteBody({
     Key? key,
     required this.postID,
-  })  : assert(postID != null),
-        super(key: key);
+  })  : super(key: key);
 
   @override
   __SinglePostRouteBodyState createState() => __SinglePostRouteBodyState();
diff --git a/lib/ui/routes/update_conversation_route.dart b/lib/ui/routes/update_conversation_route.dart
index cd5eb2c..7561d0e 100644
--- a/lib/ui/routes/update_conversation_route.dart
+++ b/lib/ui/routes/update_conversation_route.dart
@@ -9,8 +9,7 @@ class UpdateConversationRoute extends StatefulWidget {
   final int conversationID;
 
   const UpdateConversationRoute({Key? key, required this.conversationID})
-      : assert(conversationID != null),
-        super(key: key);
+      : super(key: key);
 
   @override
   State<StatefulWidget> createState() => _UpdateConversationRoute();
diff --git a/lib/ui/routes/video_player_route.dart b/lib/ui/routes/video_player_route.dart
index f615f6e..240e69b 100644
--- a/lib/ui/routes/video_player_route.dart
+++ b/lib/ui/routes/video_player_route.dart
@@ -15,8 +15,7 @@ class VideoPlayerRoute extends StatefulWidget {
   const VideoPlayerRoute({
     Key? key,
     required this.url,
-  })  : assert(url != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _VideoPlayerRouteState createState() => _VideoPlayerRouteState();
diff --git a/lib/ui/screens/authorized_group_page_screen.dart b/lib/ui/screens/authorized_group_page_screen.dart
index fcce8cf..c3ab2ef 100644
--- a/lib/ui/screens/authorized_group_page_screen.dart
+++ b/lib/ui/screens/authorized_group_page_screen.dart
@@ -35,9 +35,7 @@ class AuthorizedGroupPageScreen extends StatefulWidget {
     required this.advancedGroupInfo,
     required this.conversationID,
     required this.needRefresh,
-  })  : assert(advancedGroupInfo != null),
-        assert(needRefresh != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _AuthorizedGroupPageScreenState createState() =>
@@ -210,9 +208,7 @@ class _GroupPageTab {
     required this.widget,
     this.visible = true,
     required this.label,
-  })  : assert(widget != null),
-        assert(visible != null),
-        assert(label != null);
+  });
 
   Tab get tab => Tab(text: label);
 }
diff --git a/lib/ui/screens/call_screen.dart b/lib/ui/screens/call_screen.dart
index dff747e..a9f9e5d 100644
--- a/lib/ui/screens/call_screen.dart
+++ b/lib/ui/screens/call_screen.dart
@@ -46,9 +46,7 @@ class CallScreen extends StatefulWidget {
     this.floatingButtons = true,
     this.buildCustomAppBar,
     this.onClose,
-  })  : assert(convID != null),
-        assert(convID > 0),
-        assert(floatingButtons != null),
+  })  : assert(convID > 0),
         super(key: key);
 
   @override
@@ -694,10 +692,7 @@ class _FooterButton extends StatelessWidget {
     this.width = 45,
     this.bgColor = Colors.black,
     required this.roundedButtons,
-  })  : assert(icon != null),
-        assert(visible != null),
-        assert(roundedButtons != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
diff --git a/lib/ui/screens/conversation_members_screen.dart b/lib/ui/screens/conversation_members_screen.dart
index 6cafe18..06d8c67 100644
--- a/lib/ui/screens/conversation_members_screen.dart
+++ b/lib/ui/screens/conversation_members_screen.dart
@@ -17,8 +17,7 @@ class ConversationMembersScreen extends StatefulWidget {
   const ConversationMembersScreen({
     Key? key,
     required this.convID,
-  })  : assert(convID != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _ConversationMembersScreenState createState() =>
diff --git a/lib/ui/screens/conversation_screen.dart b/lib/ui/screens/conversation_screen.dart
index 3e9967c..6371227 100644
--- a/lib/ui/screens/conversation_screen.dart
+++ b/lib/ui/screens/conversation_screen.dart
@@ -43,8 +43,7 @@ class ConversationScreen extends StatefulWidget {
   final int conversationID;
 
   const ConversationScreen({Key? key, required this.conversationID})
-      : assert(conversationID != null),
-        super(key: key);
+      : super(key: key);
 
   @override
   State<StatefulWidget> createState() => _ConversationScreenState();
@@ -667,7 +666,9 @@ class _ConversationScreenState extends SafeState<ConversationScreen> {
               ? _buildLoadingOlderMessage()
               : null,
         ),
-        _messages!.length == 0 ? _buildNoMessagesNotice() : _buildMessagesList(),
+        _messages!.length == 0
+            ? _buildNoMessagesNotice()
+            : _buildMessagesList(),
         UserWritingInConvNotifier(convID: _conversation.id!),
         _sendCancel != null ? _buildSendingWidget() : _buildSendMessageForm(),
         _showEmojiPicker ? _buildEmojiContainer() : Container(),
diff --git a/lib/ui/screens/conversations_list_screen.dart b/lib/ui/screens/conversations_list_screen.dart
index dd4d97e..339cbae 100644
--- a/lib/ui/screens/conversations_list_screen.dart
+++ b/lib/ui/screens/conversations_list_screen.dart
@@ -27,8 +27,7 @@ class ConversationsListScreen extends StatefulWidget {
     Key? key,
     this.useSmallFAB = false,
     this.onOpen,
-  })  : assert(useSmallFAB != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   State<StatefulWidget> createState() => _ConversationScreenState();
@@ -74,7 +73,6 @@ class _ConversationScreenState extends SafeState<ConversationsListScreen> {
       ConversationsList list = cached
           ? await _conversationsHelper.getCachedList()
           : await _conversationsHelper.downloadList();
-      assert(list != null);
 
       // Get information about the members of the conversations
       _users = await _usersHelper.getList(list.allUsersID);
@@ -145,7 +143,7 @@ class _ConversationScreenState extends SafeState<ConversationsListScreen> {
                 "Do you really want to leave this conversation ? As you are its last admin, it will be completely deleted!")
             : tr("Do you really want to leave this conversation ?"));
 
-    if (result == null || !result) return;
+    if (!result) return;
 
     // Request the conversation to be deleted now
     try {
diff --git a/lib/ui/screens/group_access_denied_screen.dart b/lib/ui/screens/group_access_denied_screen.dart
index cf9297e..424e357 100644
--- a/lib/ui/screens/group_access_denied_screen.dart
+++ b/lib/ui/screens/group_access_denied_screen.dart
@@ -19,9 +19,7 @@ class GroupAccessDeniedScreen extends StatefulWidget {
     Key? key,
     required this.groupID,
     required this.onMembershipAcquired,
-  })  : assert(groupID != null),
-        assert(onMembershipAcquired != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _GroupAccessDeniedScreenState createState() =>
diff --git a/lib/ui/screens/group_screen.dart b/lib/ui/screens/group_screen.dart
index 185aa4a..a9e72b5 100644
--- a/lib/ui/screens/group_screen.dart
+++ b/lib/ui/screens/group_screen.dart
@@ -18,8 +18,7 @@ class GroupPageScreen extends StatefulWidget {
     Key? key,
     required this.groupID,
     this.conversationID,
-  })  : assert(groupID != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _GroupPageScreenState createState() => _GroupPageScreenState();
diff --git a/lib/ui/screens/group_sections/about_group_section.dart b/lib/ui/screens/group_sections/about_group_section.dart
index 2f80ebc..d6ab37d 100644
--- a/lib/ui/screens/group_sections/about_group_section.dart
+++ b/lib/ui/screens/group_sections/about_group_section.dart
@@ -15,8 +15,7 @@ class AboutGroupSection extends StatelessWidget {
   const AboutGroupSection({
     Key? key,
     required this.group,
-  })  : assert(group != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) => ListView(
@@ -51,8 +50,8 @@ class AboutGroupSection extends StatelessWidget {
           ListTile(
             leading: Icon(Icons.group),
             title: Text(tr("Members")!),
-            subtitle: Text(
-                tr("%1% members", args: {"1": group.numberMembers.toString()})!),
+            subtitle: Text(tr("%1% members",
+                args: {"1": group.numberMembers.toString()})!),
           ),
 
           // Who can create posts
@@ -92,8 +91,8 @@ class AboutGroupSection extends StatelessWidget {
           ListTile(
             leading: Icon(Icons.remove_red_eye),
             title: Text(tr("Members list visibility")!),
-            subtitle:
-                Text(group.isMembersListPublic! ? tr("Public")! : tr("Private")!),
+            subtitle: Text(
+                group.isMembersListPublic! ? tr("Public")! : tr("Private")!),
           ),
 
           group.isForezGroup
diff --git a/lib/ui/screens/group_sections/forez_presence_section.dart b/lib/ui/screens/group_sections/forez_presence_section.dart
index 952e3f0..b424867 100644
--- a/lib/ui/screens/group_sections/forez_presence_section.dart
+++ b/lib/ui/screens/group_sections/forez_presence_section.dart
@@ -18,8 +18,7 @@ class ForezPresenceSection extends StatefulWidget {
   const ForezPresenceSection({
     Key? key,
     required this.groupID,
-  })  : assert(groupID != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _ForezPresenceSectionState createState() => _ForezPresenceSectionState();
diff --git a/lib/ui/screens/group_sections/group_conversation_section.dart b/lib/ui/screens/group_sections/group_conversation_section.dart
index 1ab4bfe..da2cc2c 100644
--- a/lib/ui/screens/group_sections/group_conversation_section.dart
+++ b/lib/ui/screens/group_sections/group_conversation_section.dart
@@ -14,8 +14,7 @@ class GroupConversationSection extends StatelessWidget {
   const GroupConversationSection({
     Key? key,
     required this.conv,
-  })  : assert(conv != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) => Stack(
diff --git a/lib/ui/screens/group_sections/group_members_screen.dart b/lib/ui/screens/group_sections/group_members_screen.dart
index 05900ef..023e75e 100644
--- a/lib/ui/screens/group_sections/group_members_screen.dart
+++ b/lib/ui/screens/group_sections/group_members_screen.dart
@@ -22,8 +22,7 @@ class GroupMembersSection extends StatefulWidget {
   final int groupID;
 
   const GroupMembersSection({Key? key, required this.groupID})
-      : assert(groupID != null),
-        super(key: key);
+      : super(key: key);
 
   @override
   _GroupMembersSectionState createState() => _GroupMembersSectionState();
@@ -143,11 +142,7 @@ class _GroupMembershipTile extends StatefulWidget {
     required this.membership,
     required this.user,
     required this.onUpdated,
-  })  : assert(group != null),
-        assert(membership != null),
-        assert(user != null),
-        assert(onUpdated != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   __GroupMembershipTileState createState() => __GroupMembershipTileState();
@@ -182,15 +177,12 @@ class __GroupMembershipTileState extends State<_GroupMembershipTile> {
       case GroupMembershipLevel.MODERATOR:
       case GroupMembershipLevel.MEMBER:
         return _buildMemberCase();
-        break;
 
       case GroupMembershipLevel.INVITED:
         return _buildInvitedCase();
-        break;
 
       case GroupMembershipLevel.PENDING:
         return _buildRequestedCase();
-        break;
 
       case GroupMembershipLevel.VISITOR:
         // This case should never happen
diff --git a/lib/ui/screens/group_sections/group_posts_section.dart b/lib/ui/screens/group_sections/group_posts_section.dart
index 6f6af21..e8a7ada 100644
--- a/lib/ui/screens/group_sections/group_posts_section.dart
+++ b/lib/ui/screens/group_sections/group_posts_section.dart
@@ -14,8 +14,7 @@ class GroupPostsSection extends StatefulWidget {
   const GroupPostsSection({
     Key? key,
     required this.group,
-  })  : assert(group != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _GroupPostsSectionState createState() => _GroupPostsSectionState();
diff --git a/lib/ui/screens/notifications_screen.dart b/lib/ui/screens/notifications_screen.dart
index cab78a7..7876762 100644
--- a/lib/ui/screens/notifications_screen.dart
+++ b/lib/ui/screens/notifications_screen.dart
@@ -30,8 +30,7 @@ class NotificationsScreen extends StatefulWidget {
   const NotificationsScreen({
     Key? key,
     this.useSmallDeleteButton = false,
-  })  : assert(useSmallDeleteButton != null),
-        super(key: key);
+  }) : super(key: key);
 
   @override
   _NotificationsScreenState createState() => _NotificationsScreenState();