This file's contents are not available because this is an offline remote file that has not been downloaded.
To view the file's contents, you must move the project back online.
Explanation
You have requested to open a placeholder file in an
offline project. A placeholder file represents a remote file that
has not been downloaded and does not exist in the local workspace.
This message usually results from an API operation rather than a
user-interface operation.
User response
Move the project to online state and try the operation
again.