Here are the logs

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root@draws:/home/pi/bin# systemctl status ax25dev.service
● ax25dev.service - AX.25 device
   Loaded: loaded (/etc/systemd/system/ax25dev.service; enabled; vendor preset:
   Active: failed (Result: exit-code) since Thu 2019-04-18 22:06:03 CEST; 38s ag
  Process: 31986 ExecStart=/bin/bash -c /etc/ax25/ax25-upd (code=exited, status=
 Main PID: 31986 (code=exited, status=1/FAILURE)

Apr 18 22:06:03 draws systemd[1]: Starting AX.25 device...
Apr 18 22:06:03 draws bash[31986]: ax25-upd: Start Port udr0 with device /tmp/ki
Apr 18 22:06:03 draws bash[31986]: Direwolf serial port NOT FOUND
Apr 18 22:06:03 draws systemd[1]: ax25dev.service: Main process exited, code=exi
Apr 18 22:06:03 draws systemd[1]: Failed to start AX.25 device.
Apr 18 22:06:03 draws systemd[1]: ax25dev.service: Unit entered failed state.
Apr 18 22:06:03 draws systemd[1]: ax25dev.service: Failed with result 'exit-code

------------------

root@draws:/home/pi/bin# journalctl -xe
-- Support: https://www.debian.org/support
--
-- Unit draws-manager.service has finished shutting down.
Apr 18 22:07:48 draws systemd[1]: Started DRAWS™ Manager - A web application to
-- Subject: Unit draws-manager.service has finished start-up
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- Unit draws-manager.service has finished starting up.
--
-- The start-up result is done.
Apr 18 22:07:50 draws npm[32261]: (node:32261) [DEP0022] DeprecationWarning: os.
Apr 18 22:07:51 draws npm[32261]: > webapp@0.0.0 start /usr/local/var/draws-mana
Apr 18 22:07:51 draws npm[32261]: > node ./bin/www
Apr 18 22:07:56 draws npm[32261]: Invalid card number.
Apr 18 22:07:56 draws npm[32261]: child_process.js:644
Apr 18 22:07:56 draws npm[32261]:     throw err;
Apr 18 22:07:56 draws npm[32261]:     ^
Apr 18 22:07:56 draws npm[32261]: Error: Command failed: /usr/bin/amixer -c udrc
Apr 18 22:07:56 draws npm[32261]: Invalid card number.
Apr 18 22:07:56 draws npm[32261]:     at checkExecSyncError (child_process.js:60
Apr 18 22:07:56 draws npm[32261]:     at execSync (child_process.js:641:13)
Apr 18 22:07:56 draws npm[32261]:     at new MixerState (/usr/local/var/draws-ma
Apr 18 22:07:56 draws npm[32261]:     at Object.<anonymous> (/usr/local/var/draw
Apr 18 22:07:56 draws npm[32261]:     at Module._compile (module.js:652:30)
Apr 18 22:07:56 draws npm[32261]:     at Object.Module._extensions..js (module.j
Apr 18 22:07:56 draws npm[32261]:     at Module.load (module.js:565:32)
Apr 18 22:07:56 draws npm[32261]:     at tryModuleLoad (module.js:505:12)
Apr 18 22:07:56 draws npm[32261]:     at Function.Module._load (module.js:497:3)
Apr 18 22:07:56 draws npm[32261]:     at Module.require (module.js:596:17)
Apr 18 22:07:56 draws npm[32261]: npm ERR! webapp@0.0.0 start: `node ./bin/www`
Apr 18 22:07:56 draws npm[32261]: npm ERR! Exit status 1
Apr 18 22:07:56 draws npm[32261]: npm ERR!
Apr 18 22:07:56 draws npm[32261]: npm ERR! Failed at the webapp@0.0.0 start scri
Apr 18 22:07:56 draws npm[32261]: npm ERR! This is most likely a problem with th
Apr 18 22:07:56 draws npm[32261]: npm ERR! not with npm itself.
Apr 18 22:07:56 draws npm[32261]: npm ERR! Tell the author that this fails on yo
Apr 18 22:07:56 draws npm[32261]: npm ERR!     node ./bin/www
Apr 18 22:07:56 draws npm[32261]: npm ERR! You can get their info via:
Apr 18 22:07:56 draws npm[32261]: npm ERR!     npm owner ls webapp
Apr 18 22:07:56 draws npm[32261]: npm ERR! There is likely additional logging ou
Apr 18 22:07:56 draws npm[32261]: npm ERR! System Linux 4.14.98-v7+
Apr 18 22:07:56 draws npm[32261]: npm ERR! command "/usr/bin/node" "/usr/bin/npm
Apr 18 22:07:56 draws npm[32261]: npm ERR! cwd /usr/local/var/draws-manager/weba
Apr 18 22:07:56 draws npm[32261]: npm ERR! node -v v8.11.1
Apr 18 22:07:56 draws npm[32261]: npm ERR! npm -v 1.4.21
Apr 18 22:07:56 draws npm[32261]: npm ERR! code ELIFECYCLE
Apr 18 22:07:56 draws npm[32261]: npm WARN This failure might be due to the use
Apr 18 22:07:56 draws npm[32261]: npm WARN For further explanations, please read
Apr 18 22:07:56 draws npm[32261]: /usr/share/doc/nodejs/README.Debian
Apr 18 22:07:56 draws npm[32261]:
Apr 18 22:07:56 draws npm[32261]: npm ERR!
Apr 18 22:07:56 draws npm[32261]: npm ERR! Additional logging details can be fou
Apr 18 22:07:56 draws npm[32261]: npm ERR! /usr/local/var/draws-manager/weba
Apr 18 22:07:56 draws npm[32261]: npm ERR! not ok code 0
Apr 18 22:07:56 draws systemd[1]: draws-manager.service: Main process exited, co
Apr 18 22:07:56 draws systemd[1]: draws-manager.service: Unit entered failed sta
Apr 18 22:07:56 draws systemd[1]: draws-manager.service: Failed with result 'exi
root@draws:/home/pi/bin#