I too am experiencing the exact same issues. Yesterday, I had no problems and spent nearly all day map completing and levelling a new ranger. Today however, in the past hour, I’ve had the same error 7 times. Two of them right after the other after re-logging. I questioned Map Chat about this and had lots of replies stating this was happening with other players too since the latest patch. Hopefully a hotfix or patch can fix this?
Edit: I don’t know if this helps, but I’ve had no crashes & errors since I’ve moved into a different map. I was having these problems in Snowden Drifts and now in Lornar’s Pass, I’ve had no crashes at all. I’m still playing on the same Ranger with the same Pets.