There was an unexpected error while verifying this challenge. Usually, this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: QNTEWGWM

after installing node.js when i am running the command ask deploy i am getting the following error

Profile for the deployment: [default]
Skill Id: amzn1.ask.skill.f0439ae9-befa-4ece-a4c7-293f30e1669f
Skill deployment finished.
Call update-model error.
Error code: 400
{
  "message": "Interaction model is not valid.",
  "violations": [
    {
      "message": "InvalidSlotTypeName: Slot type name \"AMAZON.SearchQuery\" is invalid. The name of a custom slot type must begin with an alphabetic character and can consist only of alphabetic characters or underscores."
    }
  ]
}
How to solve this error

I'm currently trying to Create a Connected App and Link to Alexa.

When I click "Link Account", I get a new tab which displayes an "OAuth Error":
 

We can't authorize you because of an OAuth error. For more information, contact your Salesforce administrator.

OAUTH_APPROVAL_ERROR_GENERIC : An unexpected error has occured during authentication. Please try again.

The result page URL offers a little more information:
 

error=invalid_scope&error_description=the+requested+scope+is+not+allowed

These are the Selected OAuth Scopes for the Alexa Skill Connected App in SFDC:

Access and manage your data (api)
Provide access to your data via the Web (web)

Any ideas what is wrong or how to fix it?


 

I am beginner :  Not able to solve Trailhead challange for-Developer Beginner :Process Automation-Automate Basic Business Processes with Process Builder
"
Create a process to update child record when the parent is updated.
You've been given a requirement to keep Contact addresses in sync with the Account they belong to. Use Process Builder to create a new process that updates all child Contact addresses when the address of the Account record is updated. This process:
Can have any name.
Must be activated.
Must update Contact mailing address fields (Street, City, State, Post Code, Country) when the parent Account shipping address field values are updated.
NOTE: You may have to deactivate the validation rule for the Contacts object (created from a previous challenge) in order to complete this challenge."

 What I had tried 
Deleted validation rule on contact  from previous challange.
 Using Process builder created new Process with below details
Object: Account
Criteria:'Update Address' with condidtion

Field: selected shipping street, city, state,postalcode and country
Operator: Ischanged
Type: boolean
value: true

Condition:
Any condition met (OR)

 For Immediate action
Action name: Mailing address change
Records: Account.contacts
Criteria for Updating Records:No criteria—just update the records!

Set new field values for the records you update:

Field: selected Mailing street, city, state,postalcode and country
Type: Reference
value:  selected shipping street, city, state,postalcode and country

 after this saved and activated. So Once I check challange got below error:
"Challenge Not yet complete... here's what's wrong:
An update to an account record failed to update the mailing address fields of all child contact records. Make sure that the process is correct and that it is activated."

So Please help.