1 h3 tag and and 1 h4 rag empty

Good morning
In all page I find 1 h3 tag and 1 h4 tag empty. how i can remove them or change them in div? I think they are given by the slider or the sidebar.
thank you.
my site: https://www.restaurolandiacg.it

Hello there,

I checked with this tool and the result displayed no empty h3 and h4 tags found. Did you find them in other pages?

Regards,
Kharis

div class="header-subtext. wp_kses_postheader_subtex div

i change line 335 e 336
in functions.php now is ok
tnks