explain TypeError on line 4 in sprint 2 error 1

Author: Vaidah-dev

Sprint-2/2-mandatory-errors/1.js

@@ -3,4 +3,5 @@
 const age = 33;
 age = age + 1;
 
-console.log(age);
+// there is a TypeError: Assignment to constant variable, 
+// that tells us that changing a const is not allowed