CORS error on submit click

[smanikpure]

I have followed below steps to deploy sms plugin.
Please let me know if I need to perform additional steps to make it work.

Steps :

1. Modify appConfig.js file to set serviceBaseUrl (SSO url)
2. Run command
   twilio serverless:deploy
3. functions are deployed with https://plugin-sms-xxxx-dev.twil.io/functions deployment URL
4. Modify appConfig.js to point serviceBaseUrl to the deployed path.
   5.Run below command

twilio flex:plugins:deploy --major --changelog "Plugin to send sms " --description "SMS in Flex"

twilio flex:plugins:release --plugin plugin-sms@3.0.0 --name "Autogenerated Release 16xxxxx645" --description "The description of this Flex Plugin Configuration."

On submit button click getting

Please help

[gangstead]

I was getting this. I believe the problem was that the CORS headers are added to the response in the function but then the function had an uncaught exception due to getting a 400 when trying to post to the Channel API. In my case it turned out the 400 was due to the wrong SID being provided for the FLEX_FLOW_SID variable. The right value should begin with FO..... From the Console I had grabbed a different "Flow" sid that began FW....

Using the wrong Flow SID caused the 400 response that was not caught so the function returned a 500 without the CORS headers.