When I tried to install nngraph using luarocks, I get the following error:
Error: command 'install' requires exclusive write access to /usr/local - failed opening temp file /usr/local/.lock.tmp.78142522 for locking: /usr/local/.lock.tmp.78142522: Permission denied
The command I used:
luarocks install nngraph
I tried to look for solutions but could not find anything. I'm new to torch so any guidance will be much appreciated!