Upgraded to version 1.7.8.0 - problem with check-out

[RoelH]

After I upgraded to version 1.7.8.0 I got a message from a customer that he could not check-out. After filling in all the details the button to actually pay was not accessible. I tried for myself and noticed he was right.
I now want to re-install PrestaShop 1.7.8.0 (either by Installatron or by hand, via the module '1-Click Upgrade'), but I cannot execute this. It only works with a real upgrade and not with the same version.
I looks that I now can only de-install PrestaShop at my server (after making backups) and re-install it fresh again, with hopefully restoring my database to it and making all the modifications I did. Horrible!
Does anyone know a better solution? Thanks!

[El Patron]

Or post in job section to get someone to fix.  

[JBW]

It's a known bug: https://github.com/PrestaShop/PrestaShop/issues/26274

Here a workaround: https://github.com/PrestaShop/PrestaShop/pull/18904#issuecomment-944348444

[RoelH]

Hi JBW,

Thanks for pointing me to this solution! It is really not a pleasure when one's shop does not work at the crucial payment-part!
I followed the suggestion in https://github.com/PrestaShop/PrestaShop/issues/26274 by deleting "{if !$selected_payment_option} disabled {/if}" in payment.tpl.

Thanks!