Access shared folders -Internal Server Error

Hello everyone, I have a problem with accessing shared folders. some users receive an error when logging into the shares folder: Internal Server Error (The server was unable to complete your request. If this happens again, please send the technical details below to the server administrator.) If anyone has experience with this problem, please share information.

Internal server error is very generic, please check log files. Here are a few hints where you can find information for troubleshooting: