I installed a new theme and I’m getting some warning errors –

Warning: call_user_func_array() expects parameter 1 to be a valid
callback, function ’emma_load_textdomain’ not found or invalid
function name in
/home1/eyestigmatic/simplygypsea.com/wp-includes/class-wp-hook.php on
line 286

Warning: Cannot modify header information – headers already sent by
(output started at
/home1/eyestigmatic/simplygypsea.com/wp-includes/class-wp-hook.php:286)
in /home1/eyestigmatic/simplygypsea.com/wp-admin/includes/misc.php on
line 1126

My website is https://simplygypsea.com/
I see the errors in the dashboard and my ipad.
Thanks!