OJS 3 how to fix glyphicons is not working

i have problem on my OJS. My OJS doesn’t display glyphicons. When I checked at the postman console it turned out that I still had access to localhost, even though OJS had been uploaded to the subdomain. The following error message:

localhost: 82 / sntt2020 / plugins / themes / bootstrap3 / bootstrap / fonts / glyphicons-halflings-regular.woff2: 1 Failed to load resource: net :: ERR_CONNECTION_REFUSED