Anyone had a similar problem?

So my shutter button just stopped working. I had my camera for half a year without any issues and then all of sudden the shutter button started to act weird. It would lag when taking a picture until it just stopped altogether. It focuses normally on half press but it cant take a picture.

I tried the following:
>changed battery
>did a setting reset
>tried a different lens
>tried a manual focus lens
>changed the card

I thought it might have something to do with the card to camera connection but no. Now I'm thinking it might be corrosion or humidity problem.

Anyone had similar issue? Know how to fix it?