Double orders

-- url of the page with the problem -- : www.beeswaxcandleshop.com/cart/checkout/...ow/task-confirm.html
-- Joomla version -- : 4+

For the last few months I have been getting double orders on everything. Somone orders a product and I get 2 orders - the payment portion is always on the second order.

Did you get any feedback from users about this ? NO

Are you able to reproduce the problem yourself on your frontend ? YES

Isn't it just because the user cancels the payment, is brought back to the checkout, and then proceed to the payment again ? MAYBE YES - BUT THE USER IS NOT DOING IT.

It is not from the action of the user - It started about a month ago when I started using JCH Optimize - With the settings too high - the payment portion would not come up - turning it down helped. I am trying to get my page speed higher.

It has happenend ON EVERY ORDER IN THE LAST MONTH. Orders are going through ok - but something is wrong.

I do get this error when debug is on:
Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /home/customer/www/beeswaxcandleshop.com/public_html/templates/rt_orion/html/layouts/chromes/gantry.php on line 31