[Progress Communities] [Progress OpenEdge ABL] Forum Post: RE: Preview Failed. Webpack failed to compile the application!

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egarcia

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Please note that that the "npm start" command should be run without running Preview from Kendo UI Builder. Could you run it again if Preview had been run? You could exit Kendo UI Builder and run "npm start" directly. In the console output you can see the error: Error: listen EADDRINUSE 127.0.0.1:4200 This means that the webpack dev server is failing to start because the port is in used by another process. Did you run Preview from Kendo UI Builder before running "npm start"? The conflict in this run might be with the other instance of the webpack dev server. Could you check what process is using port 4200 ? You can use "netstat -ab" from the command line to check. If port 4200 is used by node.exe, then it might be a previous instance of the webpack dev server and you might need to run it again. > http://localhost:4200 use to show the preview including data. Now it does not. It still feels related to the SQL connection > port change. Do you see any messages in the Web Inspector console for this blank page?

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