URGENT - SIGNUPS BROKEN: "Sandbox Error: Extensibility error"

For at least 24 hours now, our signups with 8base has been broken.

When a user attempts to sign up with a valid request you get the following response from 8base:

    "data": null,
    "errors": [
            "message": "The request is invalid.",
            "locations": [
                    "line": 2,
                    "column": 3
            "path": [
            "code": "ValidationError",
            "details": {
                "user": "Sandbox Error: Extensibility error"

With this request payload:

    "operationName": "userSignUpWithPassword",
    "variables": {
        "billingInterval": "weekly",
        "firstName": "Signup",
        "lastName": "Test",
        "email": "test@mark.com",
        "password": "Test4tidxxxx!",
        "stripeToken": {
            "id": "tok_xxxxxxxxxxxxxxxx",
            "object": "token",
            "card": {
                "id": "card_xxxxxxxxxxxx",
                "object": "card",
                "address_city": null,
                "address_country": null,
                "address_line1": null,
                "address_line1_check": null,
                "address_line2": null,
                "address_state": null,
                "address_zip": null,
                "address_zip_check": null,
                "brand": "MasterCard",
                "country": "ES",
                "cvc_check": "unchecked",
                "dynamic_last4": null,
                "exp_month": xx,
                "exp_year": xxxx,
                "funding": "prepaid",
                "last4": "xxxx",
                "name": null,
                "tokenization_method": null
            "client_ip": "xxx.xx.x.x66",
            "created": 1637686948,
            "livemode": true,
            "type": "card",
            "used": false
    "query": "mutation userSignUpWithPassword($email: String!, $billingInterval: String!, $password: String!, $firstName: String!, $lastName: String!, $coupon: String, $stripeToken: JSON!) {\n  userSignUpWithPassword(\n    authProfileId: \"xxxxxxxxxxx\"\n    password: $password\n    user: {email: $email, billingInterval: $billingInterval, firstName: $firstName, lastName: $lastName, coupon: $coupon, stripe: {create: {token: $stripeToken}}}\n  ) {\n    id\n    __typename\n  }\n}"

No code has changed on our side since this error started happening. Does anyone know what that Sandbox error is or how to fix it?

This is very urgent and terrible timing… We just sent out our Black Friday promotion and no one can sign up because of this.

Please help.

Hi @MarkLyck. I have the team checking into this and we’ll be back to you ASAP.


Hi Mark,

This issue is resolved. If any other 8base users are having any issues, please let us know ASAP at support@8base.com

This issue was the result of an internal maintenance migration process that is currently underway in which you were impacted.

Very shortly, 8base will be implementing a change control process which will better manage, schedule, and communicates change windows so that when we perform changes with potential impact, they will be done in windows that are pre-communicated and don’t happen around peak times. Additionally, we will only perform emergency well-vetted and reviewed changes in risky windows of time and only if approved and necessary.

Thanks, Mark, and apologies for the impact.


1 Like

@timothy.myers This error is happening again, is this also a maintenance task?

I didn’t receive any communications about it this time either.

Resolved here