Improve error handling

Cargo.lock

@@ -632,7 +632,7 @@ checksum = "37c93d8daa9d8a012fd8ab92f088405fb202ea0b6ab73ee2482ae66af4f42091"
 
 [[package]]
 name = "light-openid"
-version = "1.0.4"
+version = "1.1.0"
 dependencies = [
  "aes-gcm",
  "base64",
@@ -642,6 +642,7 @@ dependencies = [
  "rkyv",
  "serde",
  "serde_json",
+ "thiserror",
  "urlencoding",
 ]
 
@@ -1273,6 +1274,26 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "thiserror"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tinystr"
 version = "0.8.2"