An error has occurred :-(

Usual error causes

1. You started the application from an IDE and you didn't run npm start or npm run webapp:build.
2. You had a network error while running npm install.
3. You installed a Node.js version that is not an LTS (long-term support) version.

Building the client side code again

If you want to go fast, run ./mvnw to build and run everything.

Otherwise:

1. Install npm dependencies with the command npm install
2. Build the client with the command npm run webapp:build or npm start
3. Start the server with ./mvnw or using your IDE