When importing hosts and facts in foreman 1.3.1 with

foreman-rake puppet:import:hosts_and_facts

I get the following error message:

rake aborted!
PG::CharacterNotInRepertoire: FEHLER:  ungültige Byte-Sequenz für Kodierung »UTF8«: 0xe46973
: INSERT INTO "fact_values" ("created_at", "fact_name_id", "host_id", "updated_at", "value") VALUES ($1, $2, $3, $4, $5) RETURNING "id" 

All other hosts are imported correctly, but this one. It is the only Windows-Server in this setup.