i have problems with installing MM. i tried (several times) a complete fresh install on a new SD with Raspberry Pi OS Lite 2021-03-04 and the install script:

bash -c  "$(curl -sL https://raw.githubusercontent.com/sdetweil/MagicMirror_scripts/master/raspberry.sh)"

when i try to run MM i get following ERROR

pi@MMM:~/MagicMirror $ DISPLAY=:0 npm start

> magicmirror@2.15.0 start /home/pi/MagicMirror
> ./run-start.sh $1

[19.04.2021 10:37.10.619] [LOG]   Starting MagicMirror: v2.15.0
[19.04.2021 10:37.10.632] [LOG]   Loading config ...
[19.04.2021 10:37.10.642] [LOG]   Loading module helpers ...
[19.04.2021 10:37.10.646] [LOG]   No helper found for module: alert.
[19.04.2021 10:37.10.894] [LOG]   Initializing new module helper ...
[19.04.2021 10:37.10.896] [LOG]   Module helper loaded: updatenotification
[19.04.2021 10:37.10.898] [LOG]   No helper found for module: clock.
./run-start.sh: Zeile 102:  7065 Getötet                node serveronly
npm ERR! code ELIFECYCLE
npm ERR! errno 137
npm ERR! magicmirror@2.15.0 start: `./run-start.sh $1`
npm ERR! Exit status 137
npm ERR! 
npm ERR! Failed at the magicmirror@2.15.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/pi/.npm/_logs/2021-04-19T08_37_11_344Z-debug.log

the log shows the following:

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'start' ]
2 info using npm@6.14.12
3 info using node@v10.24.1
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle magicmirror@2.15.0~prestart: magicmirror@2.15.0
6 info lifecycle magicmirror@2.15.0~start: magicmirror@2.15.0
7 verbose lifecycle magicmirror@2.15.0~start: unsafe-perm in lifecycle true
8 verbose lifecycle magicmirror@2.15.0~start: PATH: /usr/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/home/pi/MagicMirror/node_modules/.bin:/usr/$
9 verbose lifecycle magicmirror@2.15.0~start: CWD: /home/pi/MagicMirror
10 silly lifecycle magicmirror@2.15.0~start: Args: [ '-c', './run-start.sh $1' ]
11 silly lifecycle magicmirror@2.15.0~start: Returned: code: 137  signal: null
12 info lifecycle magicmirror@2.15.0~start: Failed to exec start script
13 verbose stack Error: magicmirror@2.15.0 start: `./run-start.sh $1`
13 verbose stack Exit status 137
13 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack     at EventEmitter.emit (events.js:198:13)
13 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:198:13)
13 verbose stack     at maybeClose (internal/child_process.js:982:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid magicmirror@2.15.0
15 verbose cwd /home/pi/MagicMirror
16 verbose Linux 5.10.17-v7+
17 verbose argv "/usr/bin/node" "/usr/bin/npm" "start"
18 verbose node v10.24.1
19 verbose npm  v6.14.12
20 error code ELIFECYCLE
21 error errno 137
22 error magicmirror@2.15.0 start: `./run-start.sh $1`
22 error Exit status 137
23 error Failed at the magicmirror@2.15.0 start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 137, true ]