When installing the theme, my wordpress.org admin page shows errors
I tried to follow to fix by
Upload the Installable WordPress file admin area
Log in to your WordPress admin area.
Browse to Appearance > Themes.
Click on ‘Add New’.
Browse and select the theme zip file to ‘Upload’.
Upload Via FTP
WordPress files can also be uploaded manually via FTP.
Upload the files to /wp-content/themes/ folder on your server.
Login to your WordPress admin area to change the theme.
Check out the guide on WordPress.org here.
but two ways also failed. The website still shows the errors, and it seems that the theme does not compatible with Wordpress, and it shows errors in any buttons that I chose.