title: Failed to load resource: net::ERR_FAILED in developer console google chrome
body: <p>Hi whenever I open the developer console in my macboook I run into this message
  <code>Failed to load resource: net::ERR_FAILED</code></p>
  <p>This happens in google chrome while I try to use javascript console or developer console. I tried every solutions posted here but nothing works. The error message still remains. I tried to check disable cache, clear history, uninstall chrome reinstall it back. I tired to install chrome cast extension but I do not know why that tab not available from the chrome settings. it says no device found. By the way I do not have any extensions installed except Mcafee virus protection and Adobe acrobat. Can anyone please help me? Thanks in advance for your help.</p>