500 error when changing the name of the sheet in a GSpreadsheet set in an action

[pmallol]

Found in v.524ece6

Preconditions: User has already configured an ACT connector and created a GoogleSpreadsheet with a sheet named "X".

1. Navigate to Tasks and select 'Add Task'
2. Complete the name input field with [name]
3. Select 'New case' in ACT as the Event and 'Insert' in GSpreadsheet as the Action
4. Click 'Save'
5. Open the GSpreadsheet and change the name of the sheet from "X" to "Y"
6. Navigate to Tasks and open the recently created task

Obtained: a notice that reads "An error has occurred. Please reload the page and try again" appears and a 500 error shows up in the console.

Expected: an error sign appears next to the task's name in the Tasks list to indicate the user there is an issue with that task.

[pmallol]

Ok in version 0a41dab