@Solanum_Dulcamara4
All the more reason to let it air dry for a few days. Easier to keep an eye on and might be helpful overall. If it's rot like Erwinia, a bacterial infection, it will have a strong, unpleasant odor. There is enough moisture stored in the plant that if that is the problem the rot will continue to progress and be visible even lying out, but it will slow down the process. If that is the case, then your plant may be too small to try and salvage it, but if it's not then the air drying should be beneficial. That's my thinking. Sometimes things conspire against maintaining a plants health. It's just part of growing a living organism. It's disappointing, but can be a learning experience.
Good luck and
to NGA!