The MCNP file cannot be run after conversion

I converted the mcnp file in flair and added the universe. However, an error will be reported at The end of the run: Note: The following floating-point exceptions are signalling: IEEE_UNDERFLOW_FLAG IEEE_DENORMAL

81.flair (4.8 KB)
practice_4_Th_geometry001.log (96 Bytes)
mcnpFile.txt (3.1 KB)

Dear Yuhua,

please see


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