Issue Transitioning to Plesk for a client's website, first time user. Facing FastCGI errors.

[Neeraj R]

Hi, we've developed a WordPress site and want to install it on Plesk Onyx 17.5.3. I am able to install WordPress seamlessly through the default button, however, when I try to install plugins I get an error (see attachment.)

Also the PHP settings aren't clickable (see attachment). Please let me know what I'm doing wrong and how to get the website up and running.

 

[Neeraj R]

PFA the attachments mentioned...

 

[IgorG]

Also the PHP settings aren't clickable (see attachment).

Try login to Plesk with admin account. Looks like your account hasn't necessary permissions.