UMC User Module returns empty page

Hello Team,

I need help setting up uninvention. Re-installed it 3 times but i cant seem to get the user module to work properly, it either shows the error on screenshot below or returns a blank page. I have searched online for solution and dont wanna give up on UCS yet, it useful features i need but cant use without the ability to add/manage users would really appreciate your help guys.

uninvention_error

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