The error 'Failed to load anonymous ID: /home/maxim/.tabby/agent/data.json' in Pycharm can be fixed by checking if the /home/maxim/.tabby/agent directory has been generated. If not, you can try restarting Pycharm. If the issue persists, you can check the Pycharm logs for more information. It is also possible that there is no permission to create the ~/.tabby/agent directory. In this case, you can try changing the permissions on the .tabby folder. If none of these solutions work, you can create an issue on the Tabby GitHub repository for further assistance.