What does it mean when the sqlfluff command cannot be found?

edit

If the sqlfluff command cannot be found, it means that the command-line tool or package cannot be located or installed on the system. The issue could be caused by various reasons such as incorrect installation, incorrect configuration, or the tool is not added to the system's PATH variable. To fix the issue, one should check their installation process, ensure the tool is properly configured and added to the PATH variable or reinstall the tool.