Greetings,
I have read your job requirement as well as check the error message on your website.
I am a certified Linux Admin with having 7 years of experience, I am having great command on Magento and LAMP stack.
I can solve your issue. I need your server access and I will solve your issue in max 1-2 hours.
I am available now and can start work on your task now.
Thanks!
Parth