Notice: Undefined variable: url in /opt/vtech/proxy-iipsrv/index.php on line 902

Fatal error: Uncaught TypeError: Argument 1 passed to callUrl() must be of the type string, null given, called in /opt/vtech/proxy-iipsrv/index.php on line 902 and defined in /opt/vtech/proxy-iipsrv/index.php:720 Stack trace: #0 /opt/vtech/proxy-iipsrv/index.php(902): callUrl() #1 /opt/vtech/proxy-iipsrv/index.php(925): main() #2 {main} thrown in /opt/vtech/proxy-iipsrv/index.php on line 720