Issue with web-app installation

[anabellechan]

Hi Horea,
thank you for this wonderful guide. I have been following step-by-step and it's been a good learning experience for my project thus far. However I have trouble with every npm installation like web-app or server, this always pops up. Do you happen to know why?

installing the server from the server terminal later on also gives me errors

Your help will be greatly appreciated! Thank you.
Best Regards,
Anabelle Chan