XF help needed: Server Error Log

I am looking for a qualified person to help me identify and resolve server errors.

I am constantly getting quite a few entries in my Server Error Log and I don't really know what to make of them. Site functionality does not seem to be impaired but I would like to know what I should do, if anything, to resolve this and keep the error log clean.

I need someone with solid experience and I’m happy to pay reasonable rates for the right person to help me out.

Running XF 1.4.4 with about 700,000 monthly pageviews.

Add-ons installed:

- Nodes as Tabs 1.2.2
- [bd] Widget Framework 2.5.9
- s9e Media Pack 20150412
- Change Date 1.4
- CTA Table BB Code 1.1.1
- sonnb Profanity Filter 1.0.4
- New User Team Email 1.1.0