getAsset API throws error?

Hi,
i’m currently testing Razuna hosted solution.

I encounter an error when i try calling getAsset API.
“Value not provided for required argument API_KEY of function getversions()”.

If i pass incorrect assetid (like xxx), it shows correct result: 0.
But if an asset actually exists - then above error message is thrown.

Any idea why?

Here’s complete received content after calling the API:

{
“message”: “Value not provided for required argument API_KEY of function getversions()”,
“errorcode”: “errorCode.runtimeError”,
“detail”: “”
}