Not able to invoke Launch Request from test simulator


#1

Even though the lambda function is having LaunchRequest defined. invocations in the format "open ", "launch ", "start " from alexa skill simulator is not giving any response at all. Skill I/O json input is also not shown. Please refer to the attachment.

Launch request was tested from lambda function and was successfully executed.

EDIT 1:
The reason for no response was invocation error at lambda. Lambda logs show the following:

“errorMessage”: “One or more parameter values were invalid: An AttributeValue may not contain an empty string”,

I am trying to solve this.