I am first i have to appologize if the problem that i have here because of my mistake, i am new to raspberry pi. I have been trying to setup alexa voice service for several times and i have followed the instruction given both by novaspirit tech (https://www.youtube.com/watch?v=frH9HaQTFL8) and the official github guide(https://github.com/amzn/alexa-avs-raspberry-pi) and everytime i am wanted to access my device through web browser, i always get error 400 Bad Request.
Here is the error post;
An error occurred when we tried to process your request. Rest assured, we're already working on the problem and expect to resolve it shortly.
400 Bad Request The redirect URI you provided has not been whitelisted for your application. Please add your redirect URI in the 'Allowed Return URLs' section under 'Web Settings' for your Security Profile on Amazon Developer Portal.
scope=alexa%3Aall redirect_uri=http%3A%2F%2F192.168.0.115%3A5000%2Fcode response_type=code client_id=(my_security_client_id) scope_data=%7B%22alexa%3Aall%22%3A+%7B%22productInstanceAttributes%22%3A+%7B%22deviceSerialNumber%22%3A+%22001%22%7D%2C+%22productID%22%3A+%22RaspiEcho%22%7D%7D
if anyone know haow to solve this, please reply.