Content of error msg. is weird.

[lisyoen]

Moved from webida/webida-client#552

PreCondition -
. More than two workspaces exist in the 'Workspaces' of the dashboard.
. One of workspaces is named as 'Test'.

Step -

1. Select one of workspaces which is not named as 'Test'.
2. Select a pencil icon to rename the workspace.
3. Input 'Test'.
4. Enter.

Error msg. like below is popped up.
error
Error: Error: EEXIST, rename '/webida/fs/eJ-m-mJNQg/test1'

In my opinion, the msg. needs to get edited.
.... And....
Isn't it better that error msg. is displayed before the dialog of 'Edit Workspace' is closed?