Can't play Multiplayer

Encountering this on startup:

There was an error in handling the request. 6:9.

Tried restarting battle.net, flushed dns, to no avail.

pc에서 블리자드 업데이트를하고나서
워크레프트(리포지드)를 재 실행한 뒤 배틀넷 멀티플레이에서
방을생성하거나 방을 들어가려고하면 오류가 발생하여
방이 안들어가지고
"참여하려던 게임을 찾지 못했습니다
게임이름을 잘못 입력하셨거나 게임 생성자가 게임을 취소했습니다"라는
문구만 반복해서 발생합니다. 원활한 조치 부탁드립니다.

After updating Blizzard on the PC

After re-running Walkleft (Reposed), in Battlenet multiplayer

If you try to create a room or enter the room, an error will occur.

The room doesn’t fit

"I couldn’t find the game I wanted to participate in.

You entered the wrong game name or the game creator canceled the game"

Only the phrase occurs repeatedly. Please take a smooth action.