Cannot add new payment method - screen displays 1 column of menu items

-- HikaShop version -- : 4.6.2
-- Joomla version -- : 3.10.11
-- PHP version -- : 8.0.28-0ubuntu0.20.04.3
-- Browser(s) name and version -- : Chrome 05.0.5195.125 (Official Build) (x86_64)
-- Error-message(debug-mod must be tuned on) -- : no error message as screen display is broken

Hi nicolas,
Just installed latest Hikashop version on Joomla! 3.10.11.
When going to create a new PAYMENT from Payment methods I get the same issue as this:
support ticket for J4
Screenshot after clicking NEW button from PAYMENTS screen

Hi,

Please turn on the "debug" setting of the Joomla configuration and try again. At the bottom of that page, you'll then have an error message which will provide the necessary information to understand what's going on. Please provide that error message and we should be able to tell you what to do.

Fatal error: Array and string offset access syntax with curly braces is no longer supported in /home/xxx/xxx/plugins/hikashoppayment/platron/PG_Signature.php on line 17

Hi,

You have an old version of the Platron payment plugin for HikaShop.
You need to update that plugin to fix that error as the version you're using is not compatible with PHP8 :
github.com/HikaShop/hikashoppayment-platron
Alternatively, you can disable the Platron payment plugin in the Joomla plugins manager if you're not using it and it won't generate that error when you create a new payment method.

Thank you Nicolas