Google billing service is not ready yet

[jdleung]

My App used Google-IAP 1.2.5 and worked good. Recently Google request me to upgrade Google Play Billing version, so I changed Google-IAP to the latest version 1.7.0, and upgraded gradle to 8.6.0. Then the purchase refuses to work, it always gets error

GoogleBillingService: buy. Google billing service is not ready yet. (SKU is not ready yet -1)
GoogleBillingService: buy. Google billing service is not ready yet. (SKU is not ready yet -2)

compileSdk 34
minSdk 26
targetSdk 34
versionCode 27

The following message may be useful for finding error:

queryProductDetails. Sku list is empty. (leaving nonConsumableKeys absent shows this message)
onBillingSetupFinishedOkay: billingResult: Response Code: OK, Debug Message:
processPurchases: with no purchases