Nginx Api trouble

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1

I’m unable to get my Api working. I’ve set everything up according to docs (I think) yet remote calls produce this error in Nginx logs

PHP Fatal error:  Declaration of 
Api\V8\OAuth2\Repository\ClientRepository::getClientEntity($clientIdentifier, $grantType, $clientSecret = NULL, $mustValidateSecret = true) 
must be compatible with 
League\OAuth2\Server\Repositories\ClientRepositoryInterface::getClientEntity($clientIdentifier) 
in /var/www/suitecrm/Api/V8/OAuth2/Repository/ClientRepository.php on line 33"

In my nginx conf I have this:

    location ~ /Api/ {
          index   index.php;
          try_files $uri @rewrite_api;

          location ~ \.php {
               include snippets/fastcgi-php.conf;
               fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
        }
     }
     location @rewrite_api {
            rewrite ^/Api/access_token(.*)?$    /Api/index.php/$1       last;
            rewrite ^/Api/(.*)?$    /Api/index.php/$1       last;
    }

Can anyone help please?