Notice: Undefined index: HTTP_REFERER in /home/wwwroot/tbpchina.com/webroot/sign.php on line 22

Fatal error: Uncaught TypeError: Argument 1 passed to EasyWeChat\BasicService\Jssdk\Client::setUrl() must be of the type string, null given, called in /home/wwwroot/tbpchina.com/webroot/sign.php on line 22 and defined in /home/wwwroot/tbpchina.com/vendor/overtrue/wechat/src/BasicService/Jssdk/Client.php:166 Stack trace: #0 /home/wwwroot/tbpchina.com/webroot/sign.php(22): EasyWeChat\BasicService\Jssdk\Client->setUrl(NULL) #1 {main} thrown in /home/wwwroot/tbpchina.com/vendor/overtrue/wechat/src/BasicService/Jssdk/Client.php on line 166