enter image description here
this is my tree structure of files and directory

i expect that the output will be shown on browser when i put there the running port number.
it is giving error in the project directory structure but i think it seems correct.

i already cross check the files and tree structure of project.

his application has no explicit mapping for /error, so you are seeing this as a fallback.

Sun Jul 28 09:06:19 IST 2024
There was an unexpected error (type=Internal Server Error, status=500).
javax/servlet/jsp/tagext/TagLibraryValidator
java.lang.NoClassDefFoundError: javax/servlet/jsp/tagext/TagLibraryValidator

i am getting this type of error