diff --git a/lib/Github/HttpClient/Plugin/GithubExceptionThrower.php b/lib/Github/HttpClient/Plugin/GithubExceptionThrower.php
index 9479aaaf2be..b8ee3a3325e 100644
--- a/lib/Github/HttpClient/Plugin/GithubExceptionThrower.php
+++ b/lib/Github/HttpClient/Plugin/GithubExceptionThrower.php
@@ -55,7 +55,7 @@ public function handleRequest(RequestInterface $request, callable $next, callabl
 
                 if (422 === $response->getStatusCode() && isset($content['errors'])) {
                     $errors = [];
-                    foreach ($content['errors'] as $error) {
+                    foreach ((array) $content['errors'] as $error) {
                         switch ($error['code'] ?? null) {
                             case 'missing':
                                 $errors[] = sprintf('The %s %s does not exist, for resource "%s"', $error['field'], $error['value'], $error['resource']);
diff --git a/test/Github/Tests/HttpClient/Plugin/GithubExceptionThrowerTest.php b/test/Github/Tests/HttpClient/Plugin/GithubExceptionThrowerTest.php
index 7cb7dfe33a8..c8b4dac7cb7 100644
--- a/test/Github/Tests/HttpClient/Plugin/GithubExceptionThrowerTest.php
+++ b/test/Github/Tests/HttpClient/Plugin/GithubExceptionThrowerTest.php
@@ -248,6 +248,22 @@ public static function responseProvider()
                 ),
                 'exception' => new \Github\Exception\ValidationFailedException('Validation Failed: We cannot delete an active deployment unless it is the only deployment in a given environment.', 422),
             ],
+            'Validation errors as a string' => [
+                'response' => new Response(
+                    422,
+                    [
+                        'content-type' => 'application/json',
+                    ],
+                    json_encode(
+                        [
+                            'message' => 'Validation Failed',
+                            'errors' => 'No commit found for SHA: 1234567890abcdef',
+                            'documentation_url' => 'https://docs.github.com/rest/commits/statuses#create-a-commit-status',
+                        ]
+                    )
+                ),
+                'exception' => new \Github\Exception\ValidationFailedException('Validation Failed: No commit found for SHA: 1234567890abcdef', 422),
+            ],
         ];
     }
 }