Hi @mrapacz,
Since this is an error that happens on your server we are unable to evaluate it.
You’ll need to check your?PHP error.log or debug.log?file on your hosting environment for any error message related to Fluid Checkout.
The location for the?PHP error.log or debug.log file?depends on your hosting environment configuration and unfortunately, we are unable to send you instructions to locate it. You might need to contact your hosting company to help you locate the correct file.
Once you have the log file, you can open the file in a text editor such as Notepad and search for fluid-checkout
inside it.
1. Send us the error message you are getting and we will work on a solution or provide instructions on how to proceed.
I’m assuming you have updated to the latest version of Fluid Checkout Lite available at the moment (3.0.2).
2. Which version of Fluid Checkout Lite did you have installed before updating?
Best,
Diego.