The game crashes only on one character with the error: WOW51900319

hi,
every time when I take the flight path with this character(Belphegora-Draenor EU, horde), the game crashes in the menu window with the error: WOW51900319. The problem is that it crashes only with this character! The other chars are working fine! Unfortunately, it happens all the time. I gave a ‘scanning and repair’ for the files but still have this problem.
what can I do? (I already reset the UI interface but still the same…)
thanks,

There seems to be a flightpath issue when you start it mounted. Perhaps try it dismounted?

https://eu.battle.net/support/en/article/000292151

same issue on my druid, it is not connected to a flight path issue.

One thing found in traceroute analysis is the Blizzard have latency and connection issues on their Netherlands server: et-0-0-3-br01-eqam1.as57976. net [137.221.65.110] - but likely not the only issue related to this problem…