Hi @anwar ,
please check out Posting code? Read this first! for instructions on how to post code on the forum. I edited your previous post to make it more readable.
As far as I can tell the error is due to a broken Pythia installation. If it worked before, maybe you recently upgraded your system and need to recompile Pythia? Or maybe you installed a Pythia binary incompatible with your system.
Cheers,
Enrico