[blank screen while check out]

Hello,

Blank screen while checkout before select payment gateway.

error log pasted below from /logs_blesta

[2021-03-18T05:10:18.215014+00:00] general.ERROR: Uncaught Exception Error: "Call to a member function collection() on boolean" at /www/wwwroot/my.agniyar.com/plugins/order/controllers/checkout.php line 541 {"exception":"[object] (Error(code: 0): Call to a member function collection() on boolean at /www/wwwroot/my.agniyar.com/plugins/order/controllers/checkout.php:541)"} 

 

notice log

[2021-03-18T05:10:18.214283+00:00] general.NOTICE: E_NOTICE: Trying to get property 'invoice_id' of non-object {"code":8,"message":"Trying to get property 'invoice_id' of non-object","file":"/www/wwwroot/my.agniyar.com/plugins/order/controllers/checkout.php","line":540} 

CentOS 7 64 bit, Both CWP and aaPanel have same issue.

Any way to resolve the issue ?