What do I need here for text mesh pro font?

I just upgraded my unity from ver 2017 to 2019 in order to upgrade my app to support 64 bits. The problem is, I’m missing all my text mesh pro texts and been trying to fix the issue.

Is there way to just “drag and drop” the related script into missing script instead of re-creating a whole new font asset again from scratch?

thanks in advance.

fixed by following TextMeshPro official “Migrating from Legacy”

TextMeshPro - Migrating from Legacy