Magento - couldn't access to admin after installing new modules

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I have a Magento site.

I have installed a new modules and this caused something wrong on my Magento.

I couldn't load my admin login page and couldn't access to my admin panel.

I wish to solve this issue.

Than you.

Skills required:
eCommerce, HTML, PHP, Shopping Carts, Website Design
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