Connect to S3 does not work. Connection failed in scripts

Hello
I am working on a automated script to connect to the S3 storage and put some files on that storage.
The GUI works fine but when i try to use a scripted version of this, it is not working.
I created a Batch file from the Generate session URL and use this for my script.
in the secret there is a /, so the code changed that to %2F.

See the error below.
I hope somebody can help me out.

Version of WinSCP is 5.19.4 build 11829
Log attached.

I also used the PowerShell version but same issue
Log attached.

If you can connect in the GUI, have it generate the script or PowerShell code for you:
https://winscp.net/eng/docs/ui_generateurl#script
https://winscp.net/eng/docs/ui_generateurl#code

Hello Sir,

thats indeed what i did. i generated the script but i does not work unfortionaly
any other suggestions

Please post GUI log file too.

You can also try to enable password logging and double check, if the same keys are used in the code and GUI.