New errors

I think these come from using a new version of perl:

```
Duplicate specification "maxevals:s" for option "maxevals"
Attempt to call undefined import method with arguments ("splitpath") via package "File::Spec" (Perhaps you forgot to load the package?) at /usr/local/opt/perl/lib/perl5/site_perl/5.40/PsN_5_4_0/model_plus.pm line 5.
```