Suppose you are running a backend application like Node.js, Laravel, etc which does PUT/DELETE requests on certain routes. But you find out that only GET/POST requests are working and PUT/DELETE are not working. This might be due to ModSecurity rules.
How to fix
To fix this, disable the ModSecurity vendor from Admin panel >> Server Utilities >> ModSecurity Vendors. You can also disable this for a certain domain from the enduser panel.