Signed out user can get advanced information about groups

src/helpers/GroupsHelper.ts

@@ -204,6 +204,10 @@ export class GroupsHelper {
 	 * @returns Membership info / null if none found
 	 */
 	public static async GetMembershipInfo(groupID: number, userID: number): Promise<GroupMember> {
+
+		if(userID == 0)
+			return null;
+
 		const data = await DatabaseHelper.QueryRow({
 			table: GROUPS_MEMBERS_TABLE,
 			where: {