Unable to register for expert

[kfnx]

On this page https://www.codeponder.com/register
This error shown in the console when forms are filled and create account clicked:

Error: GraphQL error: Cannot read property 'includes' of undefined

the post data:

{
  "operationName": "RegisterMutation",
  "variables": {
    "input": {
      "username": "qweee",
      "email": "[email protected]",
      "password": "qweee"
    }
  },
  "query": "mutation RegisterMutation($input: RegisterInput!) {\n  register(input: $input) {\n    errors {\n      path\n      message\n      __typename\n    }\n    __typename\n  }\n}\n"
}

[benawad]

Haven't worked on this is a while, I should probably just take the site down.