I think is probably a side effect of a recent change: Error while loading /etc/koha/sites/kohadev/plack.psgi: Can't locate C4/Boolean.pm in @INC (you may need to install the C4::Boolean module) (@INC contains: /home/vagrant/kohaclone /home/vagrant/kohaclone/installer /home/vagrant/kohaclone/lib/installer /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.24.1 /usr/local/share/perl/5.24.1 /usr/lib/x86_64-linux-gnu/perl5/5.24 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.24 /usr/share/perl/5.24 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at /etc/koha/sites/kohadev/plack.psgi line 29.
reset_all will fix it. You need to update plack.psgi.