[GitHub] [skywalking] antoni-g commented on issue #2847: cannot build UI webapp, both on Windows and Linux

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antoni-g commented on issue #2847: cannot build UI webapp, both on Windows and Linux
URL: https://github.com/apache/skywalking/issues/2847#issuecomment-500657984
 
 
   Hi, 
   
   To follow up after a whole night of debugging, I have found something. I do not know how to solve it, but certain internet networks can have a firewall configured that can block a specific port and not allow downloads for specific packages. I have found some solutions for other applications and tutorials where people have the same ```ruby Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.6:npm (npm run build)``` which involve opening a specific port, but I do not know enough about networking to suggest this at my work. 
   
   I fixed this by trying to compile at home, which had no problems. This network problem is unfortunately obfuscated by the not-so-helpful error messaging.
   
   I know this is a common issue for many people from seeing the issues here, so I suggest to anyone if you do run into this issue to not fret and reinstall your node, npm versions etc. First try it on another network.

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