fix: use array shift in error iterator due to laravel bug

Author: lindyhopchris

CHANGELOG.md

@@ -3,6 +3,13 @@
 All notable changes to this project will be documented in this file. This project adheres to
 [Semantic Versioning](http://semver.org/) and [this changelog format](http://keepachangelog.com/).
 
+## Unreleased
+
+### Fixed
+
+- [laravel#287](https://github.com/laravel-json-api/laravel/issues/287) Use `array_shift` to avoid potential problem
+  introduced in Laravel.
+
 ## [3.0.0] - 2023-02-14
 
 ### Changed

src/ErrorIterator.php

@@ -114,13 +114,15 @@ public function getIterator(): Traversable
         $failed = $this->failed();
 
         foreach ($this->validator->errors()->messages() as $key => $messages) {
-            $failures = $this->translator->validationFailures($failed[$key] ?? []);
+            $failures = $this->translator
+                ->validationFailures($failed[$key] ?? [])
+                ->all();
 
             foreach ($messages as $message) {
                 yield $this->createError(
                     $key,
                     $message,
-                    $failures->shift() ?: []
+                    array_shift($failures) ?: [],
                 );
             }
         }