Whilst running my Unit Tests in watch mode, Chrome suddenly quit and I now can no longer run 'ng test'. This randomly occurred, and has not happened in over a year of working on these tests.

The error I am getting is:

Server start failed on port 9876: Error: EACCES: permission denied

I am running on a Mac, and have tried restarting both VSCode and my laptop multiple times. There is little to no documentation that I could find on the internet that describes my issue.

My question: Why am I getting this error and how do I fix it? Otherwise, how can I go about finding out more information about this issue by looking at the port usages and how I could go about resting them or similar.

Thanks in Advance!

CodePudding user response：

This was fixed by removing ./node_modules using:

sudo rm -r node_modules

and then re-installed using:

npm install

CodePudding user response：

May be you need to uninstall node modules and reinstall them to fix the issue. Please try to execute in super user mode(root user) like this

sudo rm -r node_modules

You may also need to re-install using:

sudo npm install

Use this command to run Unit Tests in watch mode

ng t --code-coverage --watch --browsers Chrome