Diff doesn't show the modified status or size of change for files anymore

[Victor239]

Describe the bug
When I did my first two backups with Vorta doing a diff between them seemed to work fine - every file was either green, red or yellow and showed the size of the change. I've done a third one, but now that I try to diff between any two backups it only shows me the modified status and size change for one file despite there being 3.7GB of changes:

This is using borgbase.com as a remote repo.

To Reproduce
Steps to reproduce the behavior:

1. Create 3 backups for a single repo to borgbase.com
2. Try to diff any of the 2 backups
3. See error

Environment (please complete the following information):

• OS: Kubuntu 21.04
• Vorta version: 0.7.6
• Installed from: Flatpak

Additional context
Let me know if there's anything else needed to troubleshoot this.

[m3nu]

I can confirm that the output of this dialog changed between v0.7.5 and v0.7.6. Probably related to #909. Maybe @rblenis can weigh in?

[Hofer-Julian]

Can confirm, the details of the change are not present any more.

[bastiencyr]

Im sorry, its clearly related to #999 :( I'm working on fix, I will open a PR soon.
Notice that making diff between two repo without any differences will result in failure :

Uncaught exception, please file a report with this text at
https://github.com/borgbase/vorta/issues/new
Traceback (most recent call last):
  File "/home/bastien/Documents/Travail/Vorta/vorta/src/vorta/views/archive_tab.py", line 558, in list_diff_result
    window = DiffResult(result['data'], archive_newer, archive_older, result['params']['json_lines'])
  File "/home/bastien/Documents/Travail/Vorta/vorta/src/vorta/views/diff_result.py", line 35, in __init__
    files_with_attributes = [attrs + (type_f, ) for attrs, type_f in zip(files_with_attributes, fs_data[1])]
IndexError: string index out of range

[m3nu]

Oh, great. Waiting for your PR.

[rblenis]

sorry, been tied up at work. glad someone is taking a look. I'm available to review or help out if needed.