'How to set Auto-pause delay on for SQL Database? Unexpected error occured

I would like to set Auto-pause delay on for SQL Database. Zone redundancy is disabled. So I select "Enable auto-pause", set 1 hour and press Apply.

I get a strange error:

Failed to scale from General Purpose: Serverless, Gen5, 4 vCores, 
250 GB storage, zone redundant disabled to General Purpose: 
Serverless, Gen5, 4 vCores, 250 GB storage, zone redundant disabled 
for database: my-dev-sql-db-sandbox.
Error code: .Error message: An unexpected error occured while 
processing the request. 


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