upgrade to prelease version 4.0.0 fails with vscode.html not found

OS/Web Information

• Web Browser: Firefox 95.0
• Local OS: Mac OS Monterey 12.1
• Remote OS: Ubuntu 20.04.3
• Remote Architecture: amd64
• code-server --version: 4.0.0

Steps to Reproduce

1. downloading deb pkg from https://github.com/cdr/code-server/releases/download/v4.0.0/code-server_4.0.0_amd64.deb
2. upgrading from 3.12.0 to 4.0.0 by issuing:

dpkg -i code-server_4.0.0_amd64.deb
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'code-server' instead of '/tmp/code-server_4.0.0_amd64.deb'
The following packages will be upgraded:
  code-server
1 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Need to get 0 B/221 MB of archives.
After this operation, 246 MB of additional disk space will be used.
Get:1 /tmp/code-server_4.0.0_amd64.deb code-server amd64 4.0.0 [221 MB]
(Reading database ... 88122 files and directories currently installed.)
Preparing to unpack .../code-server_4.0.0_amd64.deb ...
Unpacking code-server (4.0.0) over (3.12.0) ...
Setting up code-server (4.0.0) ...

Expected

To work as normally, just like on 3.12.0

Actual

when accessing code-server over the web: I get:

ENOENT: no such file or directory, open '/usr/lib/code-server/src/browser/pages/vscode.html'

These are the only files that I can see here:

ls /usr/lib/code-server/src/browser/pages
error.css  error.html  global.css  login.css  login.html

Logs

Once this is done, replicate the issue you’re having then collect logging information from the following places:

1. The most recent files from ~/.local/share/code-server/coder-logs.

Unfortunately there’s no output in the log files, despite running the process with --log debug as seen in ps aux:

/usr/lib/code-server/lib/node /usr/lib/code-server --log debug

~/.local/share/code-server/coder-logs# tail -f *
==> code-server-stderr.log <==

==> code-server-stdout.log <==

2. The browser console.
Most probably irrelevant, but:

Layout was forced before the page was fully loaded. If stylesheets are not yet loaded this may cause a flash of unstyled content.

3. The browser network tab.
Just the 404 not found error.

Screenshot

Looking forward to any suggestions 😃

[TobiaszCudnik]

Did you restart code-server after upgrading?

The AUR package should auto restart via sysd (but it doesnt). Just FYI.

[lethargosapatheia]

@code-asher Sorry, I’m dumb. I hadn’t actually, I thought I did. So the error must have come from the fact that the previous version was still trying to access the what is now removed vscode.html - what you were probably inferring 😃 After restarting, it seems to be working correctly.