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https://nishantrana.me/2012/09/25/the-plug-in-execution-failed-because-no-sandbox-hosts-are-currently-available-please-check-that-you-have-a-sandbox-server-configured-and-that-it-is-running/
The plug-in execution failed because no Sandbox Hosts are currently available. Please check that you have a Sandbox server configured and that it is running