Need help with setting up site columns as search filters for modern pages

Hi Everyone, I am using PNP modern search web parts and I am very new to this concept. But I deployed and configured web parts in to the page. Added columns as managed properties, Now I have added columns in search filter web part. But those are not showing up in the page. 

I have attached the screenshot below. Please, anyone can help me who knows better than me. Thanks in advance