If you are talking about the small gaps in between the extrusions in the top part of the print, kind of the section from the hole going up then that most likely is the first layer height could be reduced just slightly. Not the first layer height in the slicer but that actual leveling gap from bed to nozzle.
There are a couple ways to work with it depending on the printer.
What printer, material, extrusion widht, extrusion multiplier, temps etc.?
"IF" Bed is level, extrusion multiplayer is set correctly (most of the print looks good) then I would be looking at inconsistent filament diameter...
If it always happens at the same end of the printer, I would be inclined to look at bed level..
Good luck!