MTA_SDK error

[Jockie]

I have a stupid problem that I can't fix...

I just want to retrieve the player count, but it won't work.

Fatal error: Uncaught exception 'Exception' with message 'Not Found' in /home/XX/domains/XX/public_html/jockie/mta_sdk.php:202

Stack trace:

#0 /home/XX/domains/XX/public_html/jockie/mta_sdk.php(79): mta->do_post_request('XXX.XX.XX.XXX', 22004, '/php-echo/call/...', '')

#1 /home/XX/domains/XX/public_html/jockie/mta_sdk.php(256): mta->callFunction('php-echo', 'getPlayerCount', Array)

#2 /home/XX/domains/XX/public_html/jockie/server.php(284): Resource->call('getPlayerCount')

#3 {main} thrown in /home/XX/domains/XX/public_html/jockie/mta_sdk.php on line 202