Error when running apt-get: sudo apt-get update && sudo apt-get install yarn gnutls_handshake() failed: Access was denied The problem: There is proxy configuration error of apt-get The fix: Define proxy for apt-get 1. sudo vim /etc/apt/apt.conf 2. Add line: Acquire::http::proxy " http://web-proxy.il.hpecorp.net:8080 "; Source: https://ubuntuforums.org/showthread.php?t=2011511
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