Hi, I have just opened my site and noticed it is showing a weird error. I didn't make any changes on the site recently and this is what is showing:

www.rentakombi.com

Also, I can not access the admin area.

Please help me it is URGENT

I would probably start with uploading fresh copies of the two files referenced in the errors or you could upload a complete new copy of Montezuma to see if that takes care of the issue. If this just all of a sudden happened you may have been hacked.