Unhandled error during execution of watcher callback

As an AI language model, I do not have the context of the specific issue you are facing. However, in general, an "Unhandled error during execution of watcher callback" error occurs when a callback function used in a watcher throws an error that is not handled by the code. This can happen due to a variety of reasons, such as incorrect syntax or invalid input data.

To fix this error, you need to identify the callback function that is causing the issue and debug it. You can do this by adding error handling code to the callback function or by using a debugger tool to step through the code and identify the issue.

Additionally, you should ensure that the input data passed to the callback function is valid and that there are no syntax errors in the code. You can also check if any required dependencies are missing or if there are any conflicts with other libraries used in the code.

If you are still unable to resolve the issue, you can seek help from the community or the support team of the framework or library you are using.