getting an error message that says : Hmm, looks like we hit a slight snag in this section , when try to file my taxes. How can I fix this?

It might be that not all the forms in your return have been finalized yet. If you have Draft forms in your return, it would not allow you to finish your return.

Use this link to reference when your tax forms will be available. You can search by TurboTax Product and for IRS and State-Specific Forms.

I checked over my Info multiple times to see if there's anything missing , so far I don't see anything. 

Please see this FAQ: When attempting to e-file, why am I seeing an "oops, we hit a snag" error message?