Warning: Undefined variable $curl in /usr/home/jcubic/domains/terminal.jcubic.pl/public_html/utils.php on line 80

Fatal error: Uncaught TypeError: curl_close(): Argument #1 ($handle) must be of type CurlHandle, null given in /usr/home/jcubic/domains/terminal.jcubic.pl/public_html/utils.php:80
Stack trace:
#0 /usr/home/jcubic/domains/terminal.jcubic.pl/public_html/utils.php(80): curl_close(NULL)
#1 /usr/home/jcubic/domains/terminal.jcubic.pl/public_html/examples.php(4): version()
#2 {main}
  thrown in /usr/home/jcubic/domains/terminal.jcubic.pl/public_html/utils.php on line 80