Cannot find concurrently

Trying to run the development version to make some ideas I have for the client side.
I get an error on the script. When I run the script I get:

Error: Cannot find module ‹ /home/gerry/PeerTube/scripts/dev/node_modules/.bin/concurrently ›

Any help greatly appreciated.

have you followed the development guide?

yes and I just found the reason I needed to re-install npm for some reason sorry to put you to the trouble of answering me, I am very much a newb at this. giggle my next problem is I can not get any output on my localhost I think it has something to do with my server being in a virtual machine. Thanks for replying and have a really great day