opencart2.x - add custom shipping method to opencart -


i want add custom shipping method store. tried search in google , found articles

  1. create custom shipping method in opencart: part one

  2. create custom shipping method in opencart: part two

it installed , works when want edit add " cost " , enable got:

permission denied!   not have permission access page, please refer system administrator.

i tried solution doesnt work : you not have permission access page, please refer system administrator


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