Some features fail to load when running notebook as service

Notebook
1

I installed jupyter notebook via anaconda, and also installed nb-conda and nbextension.
When notebook is started from command line, it works just fine. But when it’s started as a service, nb-conda will encounter error and fail to load. Plus, if I open a terminal, only a “#” will show up instead of “(base)user@hostname:path#”. The terminal work normally after entering “su user”.

Here is my service configuration:
[Unit]
Description=Jupyter Notebook
[Service]
Type=simple
ExecStart=/root/anaconda3/bin/jupyter-notebook
User=root
Group=root
WorkingDirectory=/root/.jupyter/notebook
Restart=always
RestartSec=10
[Install]
WantedBy=multi-user.target

And here is the output log:
[E 00:20:04.919 NotebookApp] [nb_conda_kernels] couldn’t call conda:
[Errno 2] No such file or directory: ‘conda’: ‘conda’
[I 00:20:04.919 NotebookApp] [nb_conda_kernels] enabled, 0 kernels found
[I 00:20:05.204 NotebookApp] [jupyter_nbextensions_configurator] enabled 0.4.1
[I 00:20:05.237 NotebookApp] JupyterLab extension loaded from /root/anaconda3/lib/python3.7/site-packages/jupyterlab
[I 00:20:05.238 NotebookApp] JupyterLab application directory is /root/anaconda3/share/jupyter/lab
[I 00:20:05.380 NotebookApp] [nb_conda] enabled
[I 00:20:05.381 NotebookApp] Serving notebooks from local directory: /root/.jupyter/notebook
[I 00:20:05.381 NotebookApp] The Jupyter Notebook is running at:
[I 00:20:05.381 NotebookApp] http://127.0.0.1:8888/jupyter/
[I 00:20:05.381 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).

2

PS. All conda packages have been updated.
Very appreciated if anyone can share ideas on how this happens and methods to solve the problem.

3

Problem solve!
It is neccessary to add environment infos to the service file.
For example:
…
EnvironmentFile=/root/anaconda3/envs/jupyter-env
…
And the jupyter-env file should contain all environment infos in your system, you should be able to get them via entering “export” in terminal.

4

Error: nb_conda_kernels] couldn’t call conda: [Errno 2] No such file or directory: ‘conda’: ‘conda’

Was the solution to refer to the information produced via conda export <CONDA_ENV_NAME>?

Or rather via the $ export command? Why?