Added warning for token mismatch error

app/Exceptions/Handler.php

@@ -46,6 +46,14 @@ class Handler extends ExceptionHandler {
 	{
         if ($e instanceof ModelNotFoundException) {
             return Redirect::to('/');
+        } elseif ($e instanceof \Illuminate\Session\TokenMismatchException) {
+            // https://gist.github.com/jrmadsen67/bd0f9ad0ef1ed6bb594e
+            return redirect()
+                    ->back()
+                    ->withInput($request->except('password', '_token'))
+                    ->with([
+                        'warning' => trans('texts.token_expired')
+                    ]);
         }
 
         // In production, except for maintenance mode, we'll show a custom error screen

resources/lang/en/texts.php

@@ -975,6 +975,6 @@ return array(
     'custom_invoice_charges_helps' => 'Add a text input to the invoice create/edit page and include the charge in the invoice subtotals.',
     'color_help' => 'Note: the primary color is also used in the client portal and custom email designs.',
 
-
+    'token_expired' => 'Validation token was expired. Please try again.',
 
 );