error when fetching conversations configuration

[sergiofbsilva]

Issue Summary

The error Cannot read property 'forEach' of undefined occurs when fetching conversations API configuration.

Steps to Reproduce

1. twilio api:conversations:v1:configuration:fetch -l debug

Technical details:

• twilio-cli version: twilio-cli/2.13.0 darwin-x64
• node version: node-v12.16.2
• Command output with debug logging enabled (adding -l debug to the end of the command):

[DEBUG] Config File: /Users/user/.twilio-cli/config.json
[DEBUG] Using profile: myprofile
[DEBUG] Found command "api:conversations:v1:configuration:fetch" plugin: twilio-cli
[DEBUG] Found keytar version in "@twilio/cli-core" dependencies: ^6.0.1
[DEBUG] Provided flags: {"cli-log-level":"debug","properties":"accountSid,defaultChatServiceSid,defaultMessagingServiceSid","skip-parameter-validation":false,"cli-output-format":"columns"}
[DEBUG] domainName=conversations, path=/v1/Configuration, actionName=fetch
[DEBUG] Found command "api:conversations:v1:configuration:fetch" plugin: twilio-cli
 » twilio-cli encountered an unexpected error. To report this issue, execute the command with the "-l debug" flag, then copy the output to a new issue here: "https://github.com/twilio/twilio-cli/issues"
[DEBUG] Cannot read property 'forEach' of undefined
[DEBUG] TypeError: Cannot read property 'forEach' of undefined
    at ApiCommandRunner.execute (/usr/local/Cellar/twilio/2.13.0/libexec/src/services/twilio-api/api-command-runner.js:78:18)
    at ApiCommandRunner.run (/usr/local/Cellar/twilio/2.13.0/libexec/src/services/twilio-api/api-command-runner.js:26:17)
    at NewCommandClass.run (/usr/local/Cellar/twilio/2.13.0/libexec/src/base-commands/twilio-api-command.js:39:35)
    at async NewCommandClass._run (/usr/local/Cellar/twilio/2.13.0/libexec/node_modules/@oclif/command/lib/command.js:43:20)
    at async Config.runCommand (/usr/local/Cellar/twilio/2.13.0/libexec/node_modules/@oclif/config/lib/config.js:173:24)
    at async Main.run (/usr/local/Cellar/twilio/2.13.0/libexec/node_modules/@oclif/command/lib/main.js:27:9)
    at async Main._run (/usr/local/Cellar/twilio/2.13.0/libexec/node_modules/@oclif/command/lib/command.js:43:20)