Why is this happening?

[sealfab]

Sorry for the vague title wasnt sure what to call this one.

Im getting these small openings.

they dont seem to be in the slice


Is this an issue with my printer or the slicer settings?

Printer is a Flashforge pro

thanks

[CompoundCarl]

Increase your outline overlap % on the Infill tab. You may also want to make sure that you have gap fill enabled on the Advanced tab.