How to solve an internal server error while testing an app for billing?

[MDeGiulio]

Hello,

I'm trying to test our app for billing and am receiving the following error:

{
  "errors": [
    {
      "message": "Internal error. Looks like something went wrong on our end.\nRequest ID: d2e33897-c0c3-472f-a704-2d8ce417ca59 (include this in support requests).",
      "extensions": {
        "code": "INTERNAL_SERVER_ERROR",
        "requestId": "d2e33897-c0c3-472f-a704-2d8ce417ca59"
      }
    }
  ]
}

Here the mutation used:

mutation {
  appSubscriptionCreate(
    name: "Super Duper Capped Pricing Plan"
    returnUrl: "http://sellry-sheerid-app.myshopify.com"
    test: true
    lineItems: [{
      plan: {
        appUsagePricingDetails: {
          terms: "$1 for 100 emails"
          cappedAmount: { amount: 20.00, currencyCode: USD }
        }
      }
    }]
  ){
    userErrors {
      field
      message
    }
    confirmationUrl
    appSubscription {
      id
      lineItems {
        id
        plan {
          pricingDetails {
            __typename
          }
        }
      }
    }
  }
}

Any help would be appreciated, thanks!

[MasatoNohara]

This also happend to me, and need helps. Thanks in advance.