Wordpress: Custom page for empty tag

site.com/tag/ call 404.

how to disable redirect to 404 for empty tag and continue execution arhive.php

any advice please

Use mod_rewrite to rewrite /tag to the URL of your archives. Put this rule before the rules for WP in your .htaccess.

site.com/tag/ redirect to site.com/wp-content/themes/theme/archive.php ?
this joke ?)

No, site.com/tag redirect to site.com/archive (or whatever the URL of your archives is)

RewriteRule /tag /archive [R=301,L]

no no, I want to empty the tag did not cause an error 404, continue execution and show default template …/themes/my_theme/archive.php

This is an easy way to do that