This is the most frequent occurring exception, as it says “Method is not allowed” but where ? Simply go to web.php or api.php where you have written the routes and check if any route / url is using some other type of http method instead of the intended method.
For example, if your route is using POST as method but you are calling as GET. As Laravel is too much concerned about security, it will not allow POST route to be called as GET route hence this exception occurs.