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Sorry, I'm probably being dense here, but what's the camera?
I had similar issues with mine (nikon D750) and found some tutorials online about what to do... basic suggestion was try using some kind of air blower thing (not a hairdryer!) and then if that didn't work, use a very fine makeup brush to brush the sensor. The first option didn't work for me, and I had trouble finding the right kind of makeup brush (eyeliner brush? Sorry, makeup isn't really my thing!) so ended up just using something else to brush the sensor clean (some soft tissue paper if I remember correctly) and that worked for me.
These blobs are not on the lens
Are these possibly on the sensor?
What do I do to fix? Fuji x100t