channelName check failed, should be a non-empty string
Fatal error: Uncaught Error: Call to a member function addPrivilege() on null in /home/customer/www/v.webdidas.com/public_html/yonsei_app.php:19 Stack trace: #0 /home/customer/www/v.webdidas.com/public_html/yonsei_app.php(13): RtcTokenBuilder::buildTokenWithUserAccount('01cc9e0980c449b...', '349870e228dc423...', '', NULL, NULL, 1634591294) #1 /home/customer/www/v.webdidas.com/public_html/yonsei_app.php(43): RtcTokenBuilder::buildTokenWithUid('01cc9e0980c449b...', '349870e228dc423...', '', NULL, NULL, 1634591294) #2 /home/customer/www/v.webdidas.com/public_html/yonsei.php(5): require_once('/home/customer/...') #3 {main} thrown in /home/customer/www/v.webdidas.com/public_html/yonsei_app.php on line 19