Could not JSON-decode the response from AI service

Gato AI Translations for Polylang sends a prompt to the AI service, and the response is in JSON format.

Depending on the data that you send (strings to translate, and language), the AI service might produce a response that is not valid JSON. The logs will show an error message like this:

Error [Query "translate-customposts"] Execution with errors: 🔴 Translation to zh_CN failed - There was an error requesting data from the API for provider 'OpenRouter': Could not JSON-decode the OpenRouter API's 'choices[0].message.content' field in the response

Whenever we discover a new issue, we tweak the prompt to prevent it from happening again.

Currently, the prompt contains the following:

If a sentence contains HTML, only translate the following properties inside the HTML tags: alt, title, placeholder, aria-label, aria-describedby, aria-labelledby, aria-placeholder.
Keep emojis exactly as they are, do not translate them.
Ensure that any double quotes (") within a translated string are properly escaped by adding a backslash before them (\"), but only if they haven't been escaped already.
Ensure that slashes within HTML tags are not escaped.
Ensure that the response is encoded using UTF-8 for all characters.

If you get an error, then it's a new issue that we need to identify and fix.

Do the following:

Try to understand what the issue is
Customize the prompt to deal with the issue

Once it works, send us your prompt, and we will hardcode that solution within the plugin.