This issue could be caused by a misconfiguration in the server. One possible solution is to check if the server is properly configured to handle POST requests. Another solution is to try changing the route method to GET and see if it works. If it does, then the issue might be with the server configuration.
If the issue persists, try clearing the route cache by running the following command in the terminal:
php artisan route:clear
If none of the above solutions work, try checking the server logs for any errors or warnings related to the issue.