Joplin Freeze the entire OS > Red Hat Linux Enterprise 8.6

Joplin Freeze entire OS > Red Hat Linux Enterprise 8.6 (developer edition)

  1. Install via wget -O - https://raw.githubusercontent.com/laurent22/joplin/dev/Joplin_install_and_update.sh | bash does not work (https://joplinapp.org/help/#desktop-applications) > never connect. So I've installed Joplin app via snap store.

  2. Everything works fine first time (I've setup Sync via Dropbox, I encrypt notes)

  3. Close the Joplin app and open it again it freeze my OS > Red Hat Linux Enterprise 8.6 (developer edition). Cannot move mouse or use keyboard (completly freeze) > Must to use Power button to stop my laptop.

Laptop: i7 Intel (8 core) RAM: 32GB (29 FREE)

[marius@linux ~]$ cat /etc/os-release
NAME="Red Hat Enterprise Linux"
VERSION="8.6 (Ootpa)"
ID="rhel"
ID_LIKE="fedora"
VERSION_ID="8.6"
PLATFORM_ID="platform:el8"
PRETTY_NAME="Red Hat Enterprise Linux 8.6 (Ootpa)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:8::baseos"
[marius@linux ~]$ uname -a
Linux linux 4.18.0-372.9.1.el8.x86_64 #1 SMP Fri Apr 15 22:12:19 EDT 2022 x86_64 x86_64 x86_64 GNU/Linux

I have activated Firewalld (80 & 443 ports open, http & https allowed). Does Joplin use some special port or service that must be allowed? However it is not normal to freeze the entire OS.
I have installed via snap store other apps (Skype, etc) and everything works fine.

P.S

  1. I've reinstall the Joplin app > the same problem > freeze OS when start Joplin app.
  2. I've disabled Firewalld > start Joplin > Freeze OS.

It's due to a plugin. Which ones do you use?

Joplin plugin?
I do not use any Joplin plugin, just the app installed via snap store.
I just connected Sync via Dropbox.

This works just fine so it must be a connection issue on your side somewhere.

So is it via the snap app store or via the official script? And does the log have any information?

I remove Joplin installed from snap.
I installed Joplin via script without problems. The error was due to "Firewalld". Firewalld blocked instalation of Joplin via script and freeze the OS too when Joplin start.
Currently I disabled Firewalld (firewalld.org) till I find what ports are required open for Joplin and what services.

Now this is the question: What ports / protocol use Joplin? And what services, to can whitelist them.

Sites it contacts on startup are listed in the privacy policy

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