Swedish Chracters in name or TTS

Having a bit of a problem using swedish letters “ÅÄÖ” in names and the most pressing problem is to get home assistant to accept it in TTS. I like my Google Home say “Välkommen Hem” but it refuses, It works fine with English, but using the swedish letters results in error code:
‘utf-8’ codec can’t decode byte 0xe4 in position 7482: invalid continuation byte
I tried to find a salution but no luck. Any of you fine people that can help me? ot at least point me in the right direction.

Many Thanx