I'm taking A TrailHead from link: https://trailhead.salesforce.com/modules/secdev_injection_vulnerabilities/units/secdev_inject_cross_site_scripting. When I clik on challenge button, I see below error.
There was an unhandled exception. Please reference ID: RGDEAVFI. Error: Faraday::ClientError. Message: INVALID_TYPE: select id from cvcs__c where name = 'xbc1' and ^ ERROR at Row:1:Column:16 sObject type 'cvcs__c' is not supported. If you are attempting to use a custom object, be sure to append the '__c' after the entity name. Please reference your WSDL or the describe call for the appropriate names.
What I tried: