I've Been trying to download and install OpenFOAM-v1806 for windows 10 using Ubuntu. I am currently using this guide to help me https://www.openfoam.com/download/install-windows-10.php and am stuck at the Configure the Bash-shell to run OpenFOAM step.
Everytime I open Ubuntu I get this message:
-bash /opt/OpenFOAM/OpenFOAM-v1806/etc/bashrc: No such file or directory
-bash /opt/OpenFOAM/OpenFOAM-v1806/etc/bashrc: No such file or directory
-bash /opt/OpenFOAM/OpenFOAM-v1806/etc/bashrc: No such file or directory
I assume I have messed up and typed in echo "source /opt/OpenFOAM/OpenFOAM-v1806/etc/bashrc">> ~/.bashrc 3 times where it only tells you to do that step once.
following that line I type in source $HOME/.bashrc but I just get the same output as when I open Ubuntu as the three repetitive lines of code above.
Here is a screenshot:

I assume I made 3 working environments and would like to remove them all, how would I go about this? also why am I getting the no such file or directory error when I have followed the steps on the website link?
If you can help me that would be much appreciated!