Something has gone wrong. Error in $A.getCallback() [Cannot read property 'Yb' of undefined] Failing descriptor: {markup://c:lassoCommunity}. Please try again.
Not used $A.getCallback() in my controller and helper.
Getting this error after some months of deployment.
Best Answer
@itzmukeshy7, this error is coming after salesforce winter 17 release and cause of this issue is Access Check violations that means in your code you are trying to access some attributes which are not defined by tag. Please see the link https://help.salesforce.com/apex/HTViewSolution?urlname=Something-went-wrong-error-in-community-builder&language=en_US