PHP Fatal error

so when i woke up this morning i checked on my site and realized it wouldn't load. upon checking my error log

i got tons of lines that state " PHP Fatal error: Call to a member function getRow() on null in /home/otakunat/public_html/inc/utils.inc.php on line 452"

I understand that it is most like a database issue where the site cant connect properly to it.

So I'm looking into how to look into and change the data base settings manually. Any help would be very appreciated 

I was able to figure it out, some how a space ended up in the database password field in header.inc.php. which is weird because i never altered that file or changed any of my sql credentials.

Files don't change on their own.  If you really think this file got changed outside of your control, then you need to change all passwords to your server/control panel, ftp account, database, etc.