Synagris is a tropical African genus of large potter wasps.
There are quite a few of them and they are often difficult to distinguish.
This potter wasp is possibly Synagris aestuans but I'm not 100% sure.

Potter wasps are solitary and feed on flower nectar.
Potter wasps make mud nests for their eggs and larvae or use abandoned burrows of other insects. 
They stock the nests with caterpillars and other grubs, which they seal in with mud. 
These are eaten alive by the wasp larvae.
Potter wasps have the potential to deliver painful stings, but are not aggressive and rarely attack humans

Bigodi Swamp, Kibale National Park, Uganda, 26 January 2025