Jupyter notebook launch results in Exit code 1 - jupyter-notebook

Whenever I try to launch Spyder or Jupyter notebook from Anaconda Navigator it returns Exit code: 1. I tried to set paths and upgrade packages, but nothing works.
What is causing this and how can I fix it?
Details
Windows 8
Jupyter Notebook v6.4.5
Spyder v5.1.5

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Cannot start jupyter notebook after deleting anaconda

What happened:
I have had Pip and Anaconda installed on my Mac. I tried to tidy up and decided to delete Anaconda since I assumed I only needed Pip for my Python programming.
My question:
I have been using jupyter notebook for my university project. Apparently, it had been installed by me using anaconda. Now that anaconda is gone, when I try running jupyter notebook, it is still looking in the deleted anaconda directory and throws the following error in the command line
/Users/username/anaconda3/bin/jupyter: No such file or directory
Furthermore, I now get this error when installing jupyter using pip3:
WARNING: The scripts jupyter, jupyter-migrate and jupyter-troubleshoot are installed in '/Users/username/Library/Python/3.8/bin' which is not on PATH.
Unfortunately, I barely have an idea of what I am doing when installing anything using the command line. Could you help me out in fixing the issue?

Jupyter notebook view missing in Spyder ide even after install

Help, I am trying to use jupyter notebook in spyder , I've already installed the jupyter plugin via conda install spyder-notebook -c spyder-ide upon installation I restarted jupyter but the notebook tab is missing under the view tab in spyder.
Message of installation of notebook:
Screenshot of my views and panel tabs in spyder:
Unfortunately,
The Spyder notebook plugin is not yet compatible with Spyder 5 [...]. The latest version of spyder-notebook is compatible with Spyder 4.2[...]
See here. So either you can revert to Spyder 4.2 or wait for a solution. The issue is tracked here.

Installed package on Anaconda not accessible in Jupyter Notebook

I installed Anaconda on an external drive inode/directory/0C707E95707E84EC. I opened Anaconda-Navigator to install r-aer in base(root). So far so good. Then I start Jupyter Notebook from inode/directory/0C707E95707E84EC and am unable to access the aer library.
This all started last week. when I was unable to install aerand after a circus of affairs I finally ended up updating Anaconda and then having to delete and reinstall it. All I want to do is access aeron Jupyter Notebook. The image below (last image) shows library(raer); I have tried many different command versions, e.g. library("Raer")and variations thereof.
I know that AER is installed in Anaconda . Could this be a path issue?
calling library in Jupyter Notebook
for any file on desktop (win 10) Jupyter Notebook can see that file without specifying the path, try putting that file on desktop.
see this it could help:
specifying R library path for RKernel in Anaconda Jupyter notebook_Stack OverFlow

"module not found" in jupyter lab, but works fine in "jupyter notebook"

I use conda python environment. I start the Jupyter lab following the steps below:
$conda activate <env_name>
$jupyter lab --no-browser --port=8080 &
Now, from a jupyter lab notebook, when I try to import feather (import feather), it fails with Module Not Found message.
From the jupyter lab notebook, if I execute the following, it shows me that feather is present:
! conda list | grep feather
Now, if I shutdown Jupyter Lab in the same VM and start Jupyter Notebook instead, feather gets imported successfully from the notebook.
$conda activate <env_name>
$jupyter-notebook --no-browser --port=8080 &
I see this discussion, but don't see a solution there.
Alternatively, check your path from within your Jupyter notebook vs on the command line. I found that appending the module paths to sys.path solved this exact issue.
All of the ~/anaconda3/envs/[env]/lib/python3.7* paths were missing in my case.
I have found a possible work around to avoid this issue. This is based on this answer.
From the conda environment (e.g. my_env), I can create a new Python 3 kernel (say, python3_custom). Now, this kernel will be associated with all the libraries installed in that conda environment.
$ conda activate my_env
(my_env)$ conda install ipykernel
(my_env)$ ipython kernel install --user --name=python3_custom
(my_env)$ conda deactivate
I come out of my_env or base environment. Then I start JupyterLab from the command prompt:
jupyter lab --no-browser --port=8080 &
Once I open my notebook now, I can select the kernel as python3_custom. Since in the associated conda environment (my_env), feather is already installed, I don't get the error "Module Not Found" any more.

Issue running juypter notebook after installing Anaconda

I recently installed the latest version of Anaconda which i require for a course i am doing in data analytics.
I need to use jupyter notebook but it won't run for me ..i keep getting an error jupyter notebook not found.
In the anaconda prompt i ran command conda list and juypter is in the list. The version of juputer showing is version 4.4.0.
I tried then to launch jupyter notebook through anaconda navigator but no luck either. I did notice though that in Anaconda navigator the version of juypter notebook shows as 5.6.0. The conda list command shows version 4.4.0. Strange. I then decided from navigator to install version 4.4.0 of jupyter. This has allowed me to run jupyter notebook but i cant code in the notebook and it says kernel not connected. A lot of errors also showing in command prompt.
Any help would be much appreciated as i have uninstalled and reinstalled Anaconda over 14 times and im getting nowhere. Two assignments due in on the 11th November so getting quite worried. Im very new to programmjng and from a finance background.
Im running windows 7.
Kind regards
Rebecca

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