Thank you, Supachai! I use localhost.run instead of ngrok for a while...
LINE corp, please please fix this issue as it's so painful for many developers if ngrok cannot be used.
I am also facing the same problem. Does LINE have a solution for developer testing?
I have the same problem too. NGROK was working a few weeks ago, but not anymore. When clicking 'Verify' this error shows: "An error occurred when sending the webhook" and no request was sent to the url. Does Line provide any guides or best practices for local development?
[Serveo] server not working now, so I changed localhost.run. One step more to generate SSH key, not a big deal. You may try it.