[BUG] Spectator-v5 does not work for ARAM: Mayhem on EUW

[bordercabbages]

Bug Description
Spectator-v5 does not work for ARAM: Mayhem on EUW it does however work on NA.

Expected Result
To see the game info.

Actual Result
Response Body

{
"httpStatus": 404,
"errorCode": "NOT_FOUND",
"message": "Not Found",
"implementationDetails": "spectator game info isn't found"
}

Repro Steps

1. Find someone playing ARAM: Mayhem on EUW or play one yourself.
2. Lookup the person playing with spectator-v5.
3. 404 "spectator game info isn't found"