ERROR: Temperature compute degrees of freedom < 0

Dear all,

I want to add molecules to the simulation box as rigid body.But the error information was seen when performing the fix rigid command.(ERROR: Temperature compute degrees of freedom < 0 (…/compute_temp.cpp:100))
I attach the log file.Hope you can help me check what’s wrong.
Thanks in advance.
The following is the log file.

Can you post the simplest possible input script and data

file that reproduces the problem?

Steve