If you’ve had a recent need to repair a running toilet, chances are the last entity that set the toilet in reference did not get it just right. Likely if the wetness is around the base area and only at the floor (no drips coming from above either the tank nor the supply line) where the probability would be the wax seal is letting water pass somehow.
Once supply has been turned off, flush enough too remove as much standing water in tank, undo supply line at tank, now unbolt toilet at base (x 2 nuts) and any caulking needs to be cut around base at the floor. Lift toilet with a pressure that’s continuous, this will detach the wax ring from the floor flange. It will look pretty gnarly there but mostly just wax, use gloves, and inspect that the wax ring for the running toilet has been placed so the plastic funnel has been installed down into floor flange. Now if by chance the height differs in relation to top of flange and bottom of toilet, the wax ring can be doubled for this problem some stores offer thickness options as well.