How to fix a permission issue occurring in your shop backend with error 'Permission Denied'?

Issue
After uploading and installing the module, you cannot access the module's transaction table and instead receive the message: Permission Denied.
This happens because your current user does not have permission to access the newly created navigation entry.

Resolution
You need to update the user's permissions to allow access to the transaction list of the module.

Navigate to: Settings > Users > User Groups > Administrator

(Note: Select the appropriate user group if your user belongs to a different group.)

In the selected user group, ensure the following is checked in both 'access permissions' and 'modify permissions':

wallee/transaction