AZURE M12 - All search requests failing with 500 errors

All search requests are failing with 500 errors. Below is an example request that is failing:

url --location --request POST 'https://osdu-ship.msft-osdu-test.org/api/search/v2/query' \
--header 'Content-Type: application/json' \
--header 'data-partition-id: opendes' \
--header 'Authorization: Bearer ...' \
--data-raw '{
    "kind": "osdu:wks:master-data--Well:*"
    
}'

Response:

{
    "code": 500,
    "reason": "Persistence error",
    "message": "Error generating token"
}

Did something happen in the AZURE M12 pre-shipping environment that is causing these requests to fail?