I've already configured my skill with the Alexa SDK trigger. I'm still getting "cannot find ask-sdk-core" even though I'm developing through the lambda console (the website that hosts the lambda code).
I tried using any of the provided skill templates. All of them are giving me the same issue except the fact skill. The fact skill is quite different from the other templates in that it "requires" alexa-sdk NOT ask-sdk-core. So I tried using another template like "decision tree" and changing ask-sdk-core to alexa-sdk. That didn't help. What might be the problem? It's driving me nuts!