Hi,
Could you please check if there is a .htaccess file in the public_html directory, and also confirm whether your hosting provider supports .htaccess files?
Additionally, you may want to try fixing the permissions as described here: https://minthcm.org/support/minthcm-installation-guide/.
Please also note that we do not recommend using web hosting to run MintHCM — it’s better to use a dedicated environment, such as a VPS.