ApigeeX- Verify API Key- NullPointerException

[DigitalD]

Hi All,

        We are getting the following error while executing Verify Api Key Policy.

{

"fault": {

"faultstring": "NullPointerException",

"detail": {

"errorcode": "Internal Server Error"

}

}

}

The App has only 1 key with 10 products. Few of them are working but for the rest we are consistently getting NullPointerException.

Can someone/@googleTeam guide us on whats the issue here and how this can be solved .

Thanks