Error message

• Warning: Undefined global variable $_SESSION in eval() (line 3 of /mnt/volume_sgp1_08/bengalheritageca/public_html/modules/php/php.module(80) : eval()'d code).
• Warning: Trying to access array offset on value of type null in eval() (line 3 of /mnt/volume_sgp1_08/bengalheritageca/public_html/modules/php/php.module(80) : eval()'d code).
• Warning: Undefined array key "popup-message-waiting-list" in eval() (line 3 of /mnt/volume_sgp1_08/bengalheritageca/public_html/modules/php/php.module(80) : eval()'d code).