Function showError

showError(msgCode, msg2?, cmd?, ex?): void
Called to show an error if a severe error occurs. By default, it is an orange box.
Parameters
- msgCode: string
  the message code
- Optional msg2: string
  the additional message. Ignored if not specified or null.
- Optional cmd: string
  the command causing the problem. Ignored if not specified or null.
- Optional ex: Error
  the exception
Returns void