Unable to install override in Prestashop

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zeirys
  • Answered
I have this issue installing a module which is stopping me from starting my store.
The following module(s) were not installed properly:
- avalaratax :
Unable to install override: The method getOrderShippingCost in the class Cart is already overriden.

I really need help getting this resolved, will you help me?
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JeffMa
It appears that a module that you are trying to override is already being overridden by another module. To override it with this new module, you will need to locate the module that is currently overriding the Cart class. Once that module is removed, you will be able to install your neew module.