get_the_author_email() is deprecated

Please replace function with get_the_author_meta( 'user_email' ).

These can be found at two places:
bab_manu.php, line 47
bab_topbot.php, line 50

It triggers Notices, and can potentially brake code in future versions.

Thanks!

https://www.ads-software.com/extend/plugins/better-author-bio/