我在 opencart 2.2.0 中集成 googleanlaytics,反映了一些错误
Notice: Undefined index: store_id in /home/domainname/public_html/test/admin/controller/analytics/google_analytics.php on line 13Warning: Cannot modify header information - headers already sent by (output started at /home/domainname/public_html/test/admin/controller/startup/error.php:34) in /home/domainname/public_html/test/system/library/response.php on line 12
我该如何解决这个问题