Permalink issues

Hi

i have an issues with permalink in subdomain.

Main site: https://www.example.com
Subdomain https://www.abc.example.com

so in subdomain https://www.abc.example.com only default permalink working rest of nothing to work. i have try with all the way using .htaccess. but still getting
issues. any thing need to add more in .htaccess ?any quick solution ?

Thanks