>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3505750. --> Reported by: [vakulrai](https://www.drupal.org/user/3524052) Related to !20 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>My current setup is using:<br> AI module version : 1.0.4<br> OpenAI Provider: 1.0.2</p> <p>I have observed a fatal error while saving a node after enabling automator for a body field, that uses "LLM: text" and "Default vision model" using an image field.</p> <p><code>TypeError: Drupal\ai\OperationType\Chat\ChatMessage::__construct(): Argument #2 ($text) must be of type string, null given, called in /var/www/html/docroot/modules/contrib/ai_provider_openai/src/Plugin/AiProvider/OpenAiProvider.php on line 342 in Drupal\ai\OperationType\Chat\ChatMessage-&gt;__construct() (line 47 of modules/contrib/ai/src/OperationType/Chat/ChatMessage.php).</code></p> <p>I saw that the response is not always returning a string , its null sometimes and then its being pased to the ChatMessage class.<br> $message = new ChatMessage($response['choices'][0]['message']['role'], $response['choices'][0]['message']['content']);</p> <p>RESPONSE example: </p> <blockquote><p>"id" =&gt; "chatcmpl-AzfllweZLeHljsk901oECIOtGmLTT"<br> "object" =&gt; "chat.completion"<br> "created" =&gt; 1739261933<br> "model" =&gt; "gpt-4o-2024-08-06"<br> "system_fingerprint" =&gt; "fp_4691090a87"<br> "choices" =&gt; array:1 [&#9660;<br> 0 =&gt; array:3 [&#9660;<br> "index" =&gt; 0<br> "message" =&gt; array:2 [&#9660;<br> "role" =&gt; "assistant"<br> "content" =&gt; null<br> ]<br> "finish_reason" =&gt; "stop"<br> ]<br> ]<br> "usage" =&gt; array:5 [&#9660;<br> "prompt_tokens" =&gt; 637<br> "completion_tokens" =&gt; 12<br> "total_tokens" =&gt; 649<br> "prompt_tokens_details" =&gt; array:2 [&#9654;]<br> "completion_tokens_details" =&gt; array:4 [&#9654;]<br> ]</p></blockquote> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>- Enable ai automator module<br> - use any content type and add a image field to the content type.<br> - For Text (formatted, long, with summary) e.g body field enable the automator using "LLM: text"<br> - use the default vision model and chose the image field type under provider configuration.<br> - make sure you add a promt for the field.<br> - save the settings and create a new node for the same. (The issue is appearing intermittently)</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>adding a null coalescing operator to this line has fixed the issue:<br> <code>$message = new ChatMessage($response['choices'][0]['message']['role'], $response['choices'][0]['message']['content']); </code><br> TO<br> <code> $message = new ChatMessage($response['choices'][0]['message']['role'], $response['choices'][0]['message']['content'] ?? "");</code></p> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <h3 id="summary-ui-changes">User interface changes</h3> <h3 id="summary-api-changes">API changes</h3> <h3 id="summary-data-model-changes">Data model changes</h3>