Custom css is not working in sharepoint communcation site.

Question

Hi All,

I created custom.css and uploaded in  site assets folder.

in visual studio code.

 

in FirstAppCustomizerApplicationCustomizer.ts 

 

 

added css link as below  

and in serve.json  added page url.

 

 

and then i tested and i am getting error.

 

Please correct me where i am missing. 

 

Thank you,

Sowjanya.