500 Internal Server Error

Hi, thank you for the plugin!
It works like a charm, except that when I update a product or the Woocommerce settings page or the plugins page, the Internal Server Error screen appears:
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator… and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.

I have other active plugins, but this is the one causing this issue because I’ve also tried deactivating it and, when I do, everything works fine again.

Any idea how to solve this?

Thank you in advance!