cant export still

I am editing some RAW Images from my canon 70D in Davinci resolve because I am more comfortable here than lightroom. When I grab still, and try to export this is the message I get (screenshot below) Any advice? Maybe another way to export my images or the solution to why I cant export the still out of the color tab?

same problem here.

same problem here.

it was a problem with where I was telling resolve to store my stills and cache. go to project settings and scroll down.