Unable to set private key file

Hi Tim

I got this error, what is the solution for it?

Error: unable to set private key file: '../www/ext/swish/1231234567.key' type PEM

Set the correct path to the file. If the path is correct, make sure it's a valid file.
Do you have Swish in Uzbekistan?

It is not for Uzbekistan, we are using it in Sweden.

is there any reason else except path, valid file ?

You profile says you are operating in Uzbekistan. Change it under https://www.litecart.net/en/account/edit

No, not any other reason I am aware of for why a key file is not accepted.

ok.

is this also the cause of the certificate or key file?

I think the error messages are accurate. This one says it's invalid content.
See the demo keys that came with the module what they look like.

thanks