Search Documents nightly test runs are failing with:

Error message:
Parameter 'speller' is only supported for search services created on or after 2019-01-01. Parameter name: speller

Stack trace:
RestError: Parameter 'speller' is only supported for search services created on or after 2019-01-01.
Parameter name: speller
at handleErrorResponse (D:\a_work\1\s\sdk\core\core-http\src\policies\deserializationPolicy.ts:266:17)
at parse.then (D:\a_work\1\s\sdk\core\core-http\src\policies\deserializationPolicy.ts:171:47)
at process._tickCallback (internal/process/next_tick.js:68:7)

For more details check here:

• https://dev.azure.com/azure-sdk/internal/_build/results?buildId=1018472&view=results
• https://dev.azure.com/azure-sdk/internal/_build/results?buildId=1020709&view=results