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@danieltetraquark thanks for quick reply
install error fixed here https://github.com/npm/cli/issues/6785
sudo pacman -R npm semver node-gyp
sudo rm -rf /usr/lib/node_modules/npm/node_modules/semver
sudo pacman -S npm semver
npm --version

but still cannot start properly, the error still the same:
Dec 12 11:29:47 arch server.js[460]: node:internal/modules/cjs/loader:1147
Dec 12 11:29:47 arch server.js[460]:   throw err;
Dec 12 11:29:47 arch server.js[460]:   ^
Dec 12 11:29:47 arch server.js[460]: Error: Cannot find module './server/classes/process'
Dec 12 11:29:47 arch server.js[460]: Require stack:
Dec 12 11:29:47 arch server.js[460]: - /etc/webapps/scanservjs/config.local.js
Dec 12 11:29:47 arch server.js[460]: - /usr/share/webapps/scanservjs/server/classes/user-options.js
Dec 12 11:29:47 arch server.js[460]: - /usr/share/webapps/scanservjs/server/application.js
Dec 12 11:29:47 arch server.js[460]: - /usr/share/webapps/scanservjs/server/server.js
Dec 12 11:29:47 arch server.js[460]:     at Module._resolveFilename (node:internal/modules/cjs/loader:1144:15)
Dec 12 11:29:47 arch server.js[460]:     at Function.resolve (node:internal/modules/helpers:187:19)
Dec 12 11:29:47 arch server.js[460]:     at Object.<anonymous> (/etc/webapps/scanservjs/config.local.js:3:33)
Dec 12 11:29:47 arch server.js[460]:     at Module._compile (node:internal/modules/cjs/loader:1376:14)
Dec 12 11:29:47 arch server.js[460]:     at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
Dec 12 11:29:47 arch server.js[460]:     at Module.load (node:internal/modules/cjs/loader:1207:32)
Dec 12 11:29:47 arch server.js[460]:     at Module._load (node:internal/modules/cjs/loader:1023:12)
Dec 12 11:29:47 arch server.js[460]:     at Module.require (node:internal/modules/cjs/loader:1235:19)
Dec 12 11:29:47 arch server.js[460]:     at require (node:internal/modules/helpers:176:18)
Dec 12 11:29:47 arch server.js[460]:     at new UserOptions (/usr/share/webapps/scanservjs/server/classes/user-options.js:9:22) {
Dec 12 11:29:47 arch server.js[460]:   code: 'MODULE_NOT_FOUND',
Dec 12 11:29:47 arch server.js[460]:   requireStack: [
Dec 12 11:29:47 arch server.js[460]:     '/etc/webapps/scanservjs/config.local.js',
Dec 12 11:29:47 arch server.js[460]:     '/usr/share/webapps/scanservjs/server/classes/user-options.js',
Dec 12 11:29:47 arch server.js[460]:     '/usr/share/webapps/scanservjs/server/application.js',
Dec 12 11:29:47 arch server.js[460]:     '/usr/share/webapps/scanservjs/server/server.js'
Dec 12 11:29:47 arch server.js[460]:   ]
Dec 12 11:29:47 arch server.js[460]: }
Dec 12 11:29:47 arch server.js[460]: Node.js v21.4.0
Dec 12 11:29:47 arch systemd[1]: scanservjs.service: Main process exited, code=exited, status=1/FAILURE
Dec 12 11:29:47 arch systemd[1]: scanservjs.service: Failed with result 'exit-code'.
Dec 12 11:29:47 arch systemd[1]: scanservjs.service: Scheduled restart job, restart counter is at 5.
Dec 12 11:29:47 arch systemd[1]: scanservjs.service: Start request repeated too quickly.
Dec 12 11:29:47 arch systemd[1]: scanservjs.service: Failed with result 'exit-code'.
Dec 12 11:29:47 arch systemd[1]: Failed to start scanservjs.

adding symlink fix the problem:
sudo ln -s /usr/share/webapps/scanservjs /usr/lib/scanservjs

it works now thanks :)

@jango you probably have an old version of semver installed: https://bugs.archlinux.org/task/79693 https://github.com/npm/cli/issues/6785

@danieltetraquark error on install:
==> WARNING: Using existing $srcdir/ tree
==> Starting build()...
/usr/lib/node_modules/npm/lib/es6/validate-engines.js:31
    throw err
    ^

TypeError: LRU is not a constructor
    at Object.<anonymous> (/usr/lib/node_modules/npm/node_modules/semver/classes/range.js:188:15)
    at Module._compile (node:internal/modules/cjs/loader:1376:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
    at Module.load (node:internal/modules/cjs/loader:1207:32)
    at Module._load (node:internal/modules/cjs/loader:1023:12)
    at Module.require (node:internal/modules/cjs/loader:1235:19)
    at require (node:internal/modules/helpers:176:18)
    at Object.<anonymous> (/usr/lib/node_modules/npm/node_modules/semver/functions/satisfies.js:1:15)
    at Module._compile (node:internal/modules/cjs/loader:1376:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)

Node.js v21.4.0
==> ERROR: A failure occurred in build().
    Aborting...
 -> error making: scanservjs-exit status 4
 -> Failed to install the following packages. Manual intervention is required:
scanservjs - exit status 4

@jango I also tried on another machine, and there it fails to start with Error: Cannot find module './server/classes/process'. This is very strange as the very exact build on another machine which I've tested with does work fine. I'll have a look in the next days.

EDIT: I think I fixed the issue, you may want to take a look.

Failed to start scanservjs.

CODE_FILE src/core/job.c CODE_FUNC job_emit_done_message CODE_LINE 796 INVOCATION_ID 88e88acd423a4daeaecc2f3e17580007 JOB_ID 13722 JOB_RESULT failed JOB_TYPE start MESSAGE_ID be02cf6855d2428ba40df7e9d022f03d PRIORITY 3 SYSLOG_FACILITY 3 SYSLOG_IDENTIFIER systemd TID 1

thats the old logs, i will try to test this on vm

@jango can you be more specific why it doesn't start, any error messages in the log? For example in "systemctl status scanservjs"

v3.0.3 cannot start properly always restart v2.27.0 always working

Thanks for the quick response! chown scanservjs:scanservjs /etc/webapps/scanservjs/ did the trick for me. I also had to run chown -R scanservjs:scanservjs /var/lib/webapps/scanservjs/ so the server could create preview files.

@theneuralbit you should probably run "chown scanservjs:scanservjs /etc/webapps/scanservjs/devices.json" to fix. I just updated the package, and fixed some problems with the user creation and chown which are probable the root cause.

I just installed this but I'm getting an error when the server attempts to generate devices.json:

Dec 23 11:43:21 skylab server.js[323478]: [2022-12-23T19:43:21.731Z] ERROR (Http): Error: EACCES: permission denied, open 'config/devices.json'
Dec 23 11:43:21 skylab server.js[323478]:     at Object.openSync (node:fs:591:3)
Dec 23 11:43:21 skylab server.js[323478]:     at Object.writeFileSync (node:fs:2208:35)
Dec 23 11:43:21 skylab server.js[323478]:     at FileInfo.save (/usr/share/webapps/scanservjs/server/file-info.js:151:8)
Dec 23 11:43:21 skylab server.js[323478]:     at Devices.get (/usr/share/webapps/scanservjs/server/devices.js:78:12)
Dec 23 11:43:21 skylab server.js[323478]:     at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Dec 23 11:43:21 skylab server.js[323478]:     at async Context.create (/usr/share/webapps/scanservjs/server/context.js:42:21)
Dec 23 11:43:21 skylab server.js[323478]:     at async Api.readContext (/usr/share/webapps/scanservjs/server/api.js:138:21)
Dec 23 11:43:21 skylab server.js[323478]:     at async /usr/share/webapps/scanservjs/server/configure.js:109:16 {
Dec 23 11:43:21 skylab server.js[323478]:   errno: -13,
Dec 23 11:43:21 skylab server.js[323478]:   syscall: 'open',
Dec 23 11:43:21 skylab server.js[323478]:   code: 'EACCES',
Dec 23 11:43:21 skylab server.js[323478]:   path: 'config/devices.json'
Dec 23 11:43:21 skylab server.js[323478]: }

Is there some configuration that I missed?