# › Cannot find module

Ein Typischer Fehler, welcher immer wieder vorkommt. Aber in diesem Post erkläre ich dir, wie du ihn beheben kannst!

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## 1. Halte mal in der Console nach so einer Fehlermeldung ausschau

**JavaScript**

hostleu@tutorial-js-a20471 ~ Server marked as offline...
\[pelican Daemon\]: checking server disk space usage, this could take a few seconds...
\[pelican Daemon\]: Updating process configuration files...
\[pelican Daemon\]: Ensuring file permissions are set correctly, this could take a few seconds...
hostleu@tutorial-js-a20471 ~ Server marked as starting...
\[pelican Daemon\]: Pulling Docker container image, this could take a few minutes to complete...
\[pelican Daemon\]: Finished pulling Docker container image
v24.19.0
:/home/container$ if \[\[ -d .git \]\] && \[\[ ${AUTO\_UPDATE} == "1" \]\]; then git pull; fi; if \[\[ ! -z ${NODE\_PACKAGES} \]\]; then /usr/local/bin/npm install ; fi; if \[\[ ! -z ${UNNODE\_PACKAGES} \]\]; then /usr/local/bin/npm uninstall ; fi; if \[ -f /home/container/package.json \]; then /usr/local/bin/npm install; fi; if \[\[ "${MAIN\_FILE: -3}" == ".ts" \]\]; then /usr/local/bin/npx ts-node --esm "/home/container/index.js" ; else /usr/local/bin/node "/home/container/index.js" ; fi
node:internal/modules/cjs/loader:1520
  throw err;
  ^
`Error: Cannot find module '/home/container/index.js'`
    at Module.\_resolveFilename (node:internal/modules/cjs/loader:1517:15)
    at wrapResolveFilename (node:internal/modules/cjs/loader:1071:27)
    at defaultResolveImplForCJSLoading (node:internal/modules/cjs/loader:1095:10)
    at resolveForCJSWithHooks (node:internal/modules/cjs/loader:1122:12)
    at Module.\_load (node:internal/modules/cjs/loader:1294:5)
    at wrapModuleLoad (node:internal/modules/cjs/loader:255:19)
    at Module.executeUserEntryPoint \[as runMain\] (node:internal/modules/run\_main:154:5)
    at node:internal/main/run\_main\_module:33:47 {
  code: 'MODULE\_NOT\_FOUND',
  requireStack: \[\]
}
Node.js v24.19.0
hostleu@tutorial-js-a20471 ~ Server marked as offline...
\[pelican Daemon\]: ---------- Detected server process in a crashed state! ----------
\[pelican Daemon\]: Exit code: 1
\[pelican Daemon\]: Out of memory: false
\[pelican Daemon\]: Aborting automatic restart, last crash occurred less than 60 seconds ago.

**Pytohn**

hostleu@tutorial-python-0bd318 ~ Server marked as offline...
\[pelican Daemon\]: checking server disk space usage, this could take a few seconds...
\[pelican Daemon\]: Updating process configuration files...
\[pelican Daemon\]: Ensuring file permissions are set correctly, this could take a few seconds...
hostleu@tutorial-python-0bd318 ~ Server marked as starting...
\[pelican Daemon\]: Pulling Docker container image, this could take a few minutes to complete...
\[pelican Daemon\]: Finished pulling Docker container image
Python 3.14.8
container~ if \[\[ -d .git \]\] && \[\[ "${AUTO\_UPDATE}" == "1" \]\]; then git pull; fi; if \[\[ ! -z "${PY\_PACKAGES}" \]\]; then pip install -U --prefix .local ; fi; if \[\[ -f /home/container/${REQUIREMENTS\_FILE} \]\]; then pip install -U --prefix .local -r requirements.txt; fi; /usr/local/bin/python /home/container/app.py
`/usr/local/bin/python: can't open file '/home/container/app.py': [Errno 2] No such file or directory`
hostleu@tutorial-python-0bd318 ~ Server marked as offline...
\[pelican Daemon\]: ---------- Detected server process in a crashed state! ----------
\[pelican Daemon\]: Exit code: 2
\[pelican Daemon\]: Out of memory: false
\[pelican Daemon\]: Aborting automatic restart, last crash occurred less than 60 seconds ago.

**Java**

hostleu@tutorial-java-298046 ~ Server marked as offline...
\[pelican Daemon\]: checking server disk space usage, this could take a few seconds...
\[pelican Daemon\]: Updating process configuration files...
\[pelican Daemon\]: Ensuring file permissions are set correctly, this could take a few seconds...
hostleu@tutorial-java-298046 ~ Server marked as starting...
\[pelican Daemon\]: Pulling Docker container image, this could take a few minutes to complete...
\[pelican Daemon\]: Finished pulling Docker container image
container~ java -version
openjdk version "25.0.4.1" 2026-08-18 LTS
OpenJDK Runtime Environment Temurin-25.0.4.1+1 (build 25.0.4.1+1-LTS)
OpenJDK 64-Bit Server VM Temurin-25.0.4.1+1 (build 25.0.4.1+1-LTS, mixed mode, sharing)
container~ java -Dterminal.jline=false -Dterminal.ansi=true -jar server.jar
`Error: Unable to access jarfile server.jar`
hostleu@tutorial-java-298046 ~ Server marked as offline...
\[pelican Daemon\]: ---------- Detected server process in a crashed state! ----------
\[pelican Daemon\]: Exit code: 1
\[pelican Daemon\]: Out of memory: false
\[pelican Daemon\]: checking server disk space usage, this could take a few seconds...
\[pelican Daemon\]: Updating process configuration files...
\[pelican Daemon\]: Ensuring file permissions are set correctly, this could take a few seconds...


## 2. Lösung

Ändere den **Datei Namen** deines **Main files** zu den auwahlmöglichkeiten:

**JavaScript**

`index.js`

**Python**

`app.py`

**Java**

`server.jar`