Portfolio filter issue

[Shovickbarua]

Hi,

I have recently updated my portfolio. I have added Graphics design and removed applications. I also added multiple graphics projects but whenever I click the graphics tab nothing shows. In browser console this error is showing.

script.js:154 Uncaught TypeError: Cannot read properties of undefined (reading 'classList')
    at HTMLButtonElement.<anonymous> (script.js:154:28)

I have double checked the html code but everything is fine in html.