There are no evidence for hot or cold volcanism on any historicaly recorded comet.
Only gas, dust fountains and geyser-like outbursts, caused by the sunshine.
The nucleus size is far to low to have an internal heat source, only 34km. We know that the lower bound for the diameter of a gravitationally rounded object is ca. 500 km. Then a hot core can be formed, but not necessarily.

According to NASA’s Dr. Rosaly Lopes :
Cryo-volcanism occurs on larger moons because of an internal heat source.

https://education.nationalgeographic.org/resource/cold-explosion/

Sun distance (au): 2,12 Perihel : 21.April 2024 Sun distance (au): 0,78

Time: 18:10UT 2023-12-22 Exp.50 x 65sec
Tel: 0.254m f/7.3 ST-10XME CCD 2x2bin 1.5"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.