I'm not sure that the entire input file copied correctly, would you mind checking? Also, the offending error message at the end of the output file would be really helpful for figuring out what's going on.
Just by looking at the piece of the input you provided, it seems that you're indicating to Psi4 that your molecule is a neutral, closed-shell singlet (as indicated by the "
0 1" in your molecule block for charge
0 and spin multiplicity
1), so I'm not surprised that you are having trouble running an open shell computation on it. Also, since SAPT is a two-body theory, you'll have to have more than one molecule in your geometry specification in order to use any flavor of SAPT. However, since the rest of your input seems to be missing, I'm not sure if this is actually an issue.