Uncaught TypeError: Cannot convert undefined or null to obj…

The code attempted to use a method that requires an object, but it received either undefined or null instead. This often happens when trying to access properties or methods on a variable that hasn't been properly initialized.

This broke because JavaScript cannot convert undefined or null to an object, which is necessary for operations like Object.keys() or Object.assign(). If the variable was expected to hold an object but was not initialized correctly, this error will occur.

To fix this, ensure that the variable is initialized to an object before using it. You can add a check to see if the variable is null or undefined and provide a default object if necessary.