TypeError: Assignment to constant variable.

The error occurs when you try to reassign a value to a variable declared with 'const'. In JavaScript, 'const' is used to declare variables that should not be reassigned after their initial assignment.

This broke because 'const' variables are immutable in terms of reassignment. Attempting to change their value after declaration violates the rules of constant variables in JavaScript.

To fix this error, either change the variable declaration from 'const' to 'let' or 'var' if you need to reassign it. Alternatively, ensure that you do not attempt to reassign a 'const' variable.