[Koha-translate] Can't locate C4/TmplTokenType.pm in @INC

I tried: env KOHA_CONF=/etc/koha/koha-conf.xml env PERL5LIB=/usr/share/koha/lib perl translate install de-De but got: readdir () attempted on invalid dirhandle $fh at LangInstaller.pm line 65. closedir () attempted on invalid dirhandle $fh at LangInstaller.pm line 66. Unsupported language: de-DE many thanks