Error: "Cannot convert undefined or null to object" when Attempting to Sign In
Last Updated:
Overview
Users cannot log in due to the error:
Cannot convert undefined or null to object
This error can be found on the auth0 dashboard logs.
Cause
This error is a javascript error, and it is likely to be produced in one of the extensibility points. For this, please check the customizations at:
- Actions
- Rules
- Hooks
- Custom database scripts
Solution
This error points towards a variable in the code that is "undefined" or null. Also, it indicates that the code is being used to convert it to an object. For example, a code like this would raise this particular javascript error:
Object.entries(undefinedOrNullVariable).reduce(.....)
