I got error: Mageplaza_Core has been already defined

There are 2 different ways to install Mageplaza extensions:

- Copy and paste: download from our store https://www.mageplaza.com
- Via composer command

Because you installed Mageplaza Extensions via composer and now install by copying package from our store.
In this case, it conflicts Core module. Please read more its solutions in here.

Updated on: 06/14/2019

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