Staging Site – Errors

I’m trying to clone the site to a staging area omega.websitehs.com.
It has a very large database – 150mb

I run installer and on the last step the page goes blank. The dev site can’t connect to the database. I check wp-config and database, un, and pw are all empty. I fill them in and the site redirects to omegaquant.com (original site)

I’ve tried two different servers with no luck.
Any advise appreciated.

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