Buckets crashes if backup fails

[iffy]

Version: 0.68.0 (node: v12.4.0)
OS: win32 10.0.19044 x64
Lang: en English
Loc: buckets://budget-5/budget/index.html#/y2023m3/buckets
0.68.0-20230310-YFkmgLSb

[2023-03-10 03:41:51.256] [info] (core) INFO (backups) Backing up New New Budget (Test).buckets ...
[2023-03-10 03:41:51.267] [info] (core) ERROR The system cannot find the path specified.
[2023-03-10 03:41:51.268] [info] (core) Additional info: D:\Buckets
[2023-03-10 03:41:51.268] [info] (core) oserr.nim(95)            raiseOSError
[2023-03-10 03:41:51.268] [info] (core) Error: unhandled exception: The system cannot find the path specified.
[2023-03-10 03:41:51.268] [info] (core) Additional info: D:\Buckets [OSError]
[2023-03-10 03:41:51.334] [info] (buckets-node) ProcessBackend exit 1 null
[2023-03-10 03:41:51.339] [error] (core) Error: BucketsLib bin died: 1/null
    at ChildProcess.<anonymous> (C:\Program Files\Buckets\resources\app.asar\node_modules\buckets-node\dist\main.js:280:44)
    at ChildProcess.emit (events.js:200:13)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)

[iffy]

Included in v0.70.3 release (AUTOMATED COMMENT)