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This error occurs because you are trying to access the property 'name' of an undefined variable. This means that the variable you are trying to access does not exist or has not been properly initialized.

To fix this error, you need to make sure that the variable is properly initialized before trying to access its properties. You can do this by checking if the variable is undefined before accessing its properties, like this:

if (variable !== undefined) { // Access the property of the variable console.log(variable.name); } else { console.log('Variable is undefined'); }

By adding this check before accessing the property, you can prevent the "Cannot read property 'name' of undefined" error from occurring.