Error message at checkout

I'm getting a error after mollie iDeal checkout. This is just a couple of days now, never gave problems before.

0 - Call to undefined function _PhpScoper5d8cb17438769\GuzzleHttp\choose_handler()

Can not find the problem, please help asap.

Thanks

Hi,

This looks like an incompatibility between two extensions using different versions of the library GuzzleHttp.
Please activate the "debug" setting of the Joomla configuration and reproduce the error.
You should then get an error message along with a call stack which will provide more information on what's going on. That will help move forward towards a solution.

Hi, I got the same error after upgrading (re-installing) my website from joomla 3 to 5
Using Hikashop 5 (latest update done today)

Ideal plugin works ok in the Joomla 3 site, but installing it on the new joomla 5 I get this error, I'm using the same settings as in cmo
Did the error log but... I don't have a clue where to find the solution, can you guide me?

Hi,

This is not the same error.
Yours looks like a problem with the Mollie payment plugin. Are you using the latest version ?
Maybe the old version of the plugin is not compatible with Joomla 5 ?
Did you try to download the latest version install package and installed it on the website ?
If you have the problem with the latest version, I would recommend contacting the developer of that plugin, SkySpider, so that they can look into it:
skyspider.com.au/#contact

Thanks for your prompt response.
I purchased the last version and everything works as designed