FEFO Permission Error

We have been trying to solve this error for months and can't seem to get it taken care of.

Here is the error message:

Cause: A User Error Has Occurred

Bundle Name: FEFO Lot Assignments

Environment: Production

Date & Time: 09/27/2023 04:10 pm

Record Type: Sales Order

Internal ID: 313482

Execution Time: 0.00s

Script Usage: 0

Script: FEFO_UE_Sales_Order

Type: User Event

Function: beforeLoad

Error: INSUFFICIENT_PERMISSION

{"type":"error.SuiteScriptError","name":"INSUFFICIENT_PERMISSION","message":"Permission Violation: You need the 'Lists -> Documents and Files' permission to access this page. Please contact your account administrator.","id":"","stack":["createError(N/error)","<anonymous>(/SuiteBundles/Bundle 279508/com.netsuite.fefoshelflifeallocation/src/SalesOrder/ui/controller/FEFO_UE_SalesOrderController.js:82)","beforeLoad(/SuiteBundles/Bundle 279508/com.netsuite.fefoshelflifeallocation/src/SalesOrder/main/FEFO_UE_SalesOrder.js:182)"],"cause":{"type":"internal error","code":"INSUFFICIENT_PERMISSION","details":"Permission Violation: You need the 'Lists -> Documents and Files' permission to access this page. Please contact your account administrator.","userEvent":"beforeload","stackTrace":["createError(N/error)","<anonymous>(/SuiteBundles/Bundle 279508/com.netsuite.fefoshelflifeallocation/src/SalesOrder/ui/controller/FEFO_UE_SalesOrderController.js:82)","beforeLoad(/SuiteBundles/Bundle 279508/com.netsuite.fefoshelflifeallocation/src/SalesOrder/main/FEFO_UE_SalesOrder.js:182)"],"notifyOff":false},"notifyOff":false,"userFacing":false}