joplin-plugin-backup: Blank password make backup unterminated

Hi, Today, back to the office after vacation, I upgraded Joplin (from 2.1.9 to 2.3.5), the plugins and all the needs. I try to make manual backup, from the Tools menu, but I don’t see the backup file in the destination directory.

Then I started fumbling through directories and I see the temporary file jex and a 0-byte 7zip file. It stuck in this situation.

Then I looked in the plugin configuration and I see this:

In the log file there’s no information (see log pasted at bottom).

I think there’s a problem when the password is left blank. N.B. The password was set before the last joplin upgrade. Maybe it was deleted in the process?

Bye and thanks.

[2021-08-23 11:44:05.417] [info] Backup started
[2021-08-23 11:44:05.421] [verbose] loadSettings
[2021-08-23 11:44:05.423] [verbose] loadBackupPath
[2021-08-23 11:44:05.432] [verbose] Plugin settings:
[2021-08-23 11:44:05.433] [verbose] path: y:\Research and Development\Working Area\XXXXXXXX\joplin-bkp\
[2021-08-23 11:44:05.434] [verbose] singleJex: true
[2021-08-23 11:44:05.437] [verbose] backupRetention: 3
[2021-08-23 11:44:05.440] [verbose] backupInterval: 24
[2021-08-23 11:44:05.442] [verbose] onlyOnChange: true
[2021-08-23 11:44:05.443] [verbose] usePassword: true
[2021-08-23 11:44:05.445] [verbose] lastBackup: 1626252674049
[2021-08-23 11:44:05.447] [verbose] fileLogLevel: verbose
[2021-08-23 11:44:05.448] [verbose] zipArchive: no
[2021-08-23 11:44:05.450] [verbose] compressionLevel: 0
[2021-08-23 11:44:05.451] [verbose] exportPath: 
[2021-08-23 11:44:05.453] [verbose] backupSetName: {YYYY}-{MM}-{DD}-{HHmm}
[2021-08-23 11:44:05.454] [verbose] backupInfo: [{"name":"2021-07-14-1051","date":1626252674049},{"name":"2021-07-13-1049","date":1626166142194},{"name":"2021-07-12-1046","date":1626079561451}]
[2021-08-23 11:44:05.456] [verbose] activeBackupPath: C:\Users\XXXXXXXX\Joplin\JoplinProfile\tmp\joplin_active_backup_job
[2021-08-23 11:44:05.457] [verbose] backupBasePath: y:\Research and Development\Working Area\XXXXXXXX\joplin-bkp\
[2021-08-23 11:44:05.457] [verbose] logFile: C:\Users\XXXXXXXX\Joplin\JoplinProfile\cache\io.github.jackgruber.backup\activeBackup.log
[2021-08-23 11:44:05.458] [verbose] showDoneMsg: true
[2021-08-23 11:44:05.459] [verbose] installationDir: C:\Users\XXXXXXXX\Joplin\JoplinProfile\cache\io.github.jackgruber.backup
[2021-08-23 11:44:05.464] [info] Enable password protection: true
[2021-08-23 11:44:05.465] [verbose] Backup path: y:\Research and Development\Working Area\XXXXXXXX\joplin-bkp\
[2021-08-23 11:44:05.465] [verbose] Active backup path (export path): C:\Users\XXXXXXXX\Joplin\JoplinProfile\tmp\joplin_active_backup_job
[2021-08-23 11:44:05.466] [verbose] Create folder C:\Users\XXXXXXXX\Joplin\JoplinProfile\tmp\joplin_active_backup_job
[2021-08-23 11:44:05.468] [info] Backup Profile Data
[2021-08-23 11:44:05.468] [verbose] Create folder C:\Users\XXXXXXXX\Joplin\JoplinProfile\tmp\joplin_active_backup_job\profile
[2021-08-23 11:44:05.471] [verbose] Copy C:\Users\XXXXXXXX\Joplin\JoplinProfile\settings.json
[2021-08-23 11:44:05.476] [verbose] Copy C:\Users\XXXXXXXX\Joplin\JoplinProfile\keymap-desktop.json
[2021-08-23 11:44:05.478] [verbose] Copy C:\Users\XXXXXXXX\Joplin\JoplinProfile\userchrome.css
[2021-08-23 11:44:05.480] [verbose] Copy C:\Users\XXXXXXXX\Joplin\JoplinProfile\userstyle.css
[2021-08-23 11:44:05.483] [info] No templateDir, Joplin >= v2.2.5
[2021-08-23 11:44:05.484] [info] Select notebooks for export
[2021-08-23 11:44:05.489] [verbose] Add 'LAVORO' (651d3340ca254cbb9f1574436e6b4761)

[---8<------8<------8<------8<--- SNIP! ---8<------8<------8<------8<---]

[2021-08-23 11:44:05.584] [verbose] Add 'Imported Templates - 23/08/2021' (adf9634c660a49efa969f2b6160045cc)
[2021-08-23 11:44:05.585] [info] Create single file JEX backup
[2021-08-23 11:44:16.258] [info] Create zip archive
[2021-08-23 11:44:16.260] [verbose] Add C:\Users\XXXXXXXX\Joplin\JoplinProfile\tmp\joplin_active_backup_job\all_notebooks.jex to zip C:\Users\XXXXXXXX\Joplin\JoplinProfile\tmp\joplin_active_backup_job\all_notebooks.jex.7z

UPDATE!

The backup seemed impossible to restart and the password kept disappearing. It all seemed frozen. As soon as I restarted Joplin (several times) the automatic backup started, but it was impossible to finish and the password kept disappearing.

To try to restart from a “clean” situation, I removed the check from “Password protected backups”, I stopped Joplin, I deleted the backup logfile and the tmp directory, then I restarted joplin and the first automatic backup started and went successful. So I reset the “Password protected backups”, entered the password, launched a manual backup and everything was fine. The only strange thing, no done message was showed.