fix cr code

modules/server/containers/data/invidious/login.cr

@@ -10,7 +10,8 @@ module Invidious::Routes::Login
         return error_template(400, "Login has been disabled by administrator.") if !CONFIG.login_enabled
         
 
-        if forwarded_user = env.request.headers["X-authentik-email"]? begin
+        if forwarded_user = env.request.headers["X-authentik-email"]? 
+            begin
                 email = forwarded_user?.try &.downcase.byte_slice(0, 254)
                 
                 return error_template(401, "User ID is a required field") if email.nil? || email.empty?
@@ -55,11 +56,13 @@ module Invidious::Routes::Login
                     end
                 end
 
-            env.redirect referer
-        else
-            env.redirect referer
+                return env.redirect referer
+            rescue ex
+                return error_template(500, "Authentication error: #{ex.message}")
             end
         end
+        env.redirect referer
+    end
 
     def self.signout(env)
         locale = env.get("preferences").as(Preferences).locale