I try to create a code review request through arc diff, then I got the following exception. I try to search to see whether anyone hit similar problem in google, but I didn't get anyluck, can someone help?
[2015-09-30 03:48:01] EXCEPTION: (Exception) Failed to passthru proc_open(): proc_open(): CreateProcess failed, error code - 2 at [<phutil>\src\future\exec\PhutilExecPassthru.php:99] arcanist(), phutil() #0 PhutilExecPassthru::execute() called at [<phutil>\src\future\exec\execx.php:50] #1 phutil_passthru(string, PhutilCommandString) called at [<phutil>\src\console\PhutilInteractiveEditor.php:122] #2 PhutilInteractiveEditor::invokeEditor(string, string, integer) called at [<phutil>\src\console\PhutilInteractiveEditor.php:77] #3 PhutilInteractiveEditor::editInteractively() called at [<arcanist>\src\workflow\ArcanistDiffWorkflow.php:1664] #4 ArcanistDiffWorkflow::getCommitMessageFromUser() called at [<arcanist>\src\workflow\ArcanistDiffWorkflow.php:1507] #5 ArcanistDiffWorkflow::buildCommitMessage() called at [<arcanist>\src\workflow\ArcanistDiffWorkflow.php:460] #6 ArcanistDiffWorkflow::run() called at [<arcanist>\scripts\arcanist.php:382]