Handle unknown errors

ex) server internal error, client network error

Author: Perlmint

web-next/src/routes/sign/index.tsx

@@ -143,6 +143,9 @@ export default function SignPage() {
         onCompleted(response) {
           onCompleted(response.loginByEmail);
         },
+        onError(_error) {
+          onError();
+        },
       });
     } else {
       loginByUsername({
@@ -154,6 +157,9 @@ export default function SignPage() {
         onCompleted(response) {
           onCompleted(response.loginByUsername);
         },
+        onError(_error) {
+          onError();
+        },
       });
     }
   }
@@ -168,10 +174,16 @@ export default function SignPage() {
     ) {
       setErrorCode(data.loginErrorKind);
     } else {
-      setErrorCode("UNKNOWN");
+      onError();
     }
   }
 
+  function onError() {
+    setChallenging(false);
+    setErrorCode("UNKNOWN");
+    setToken(undefined);
+  }
+
   function getSignInMessage() {
     const currentToken = token();
     const currentErrorCode = errorCode();