[2014-03-12 12:22:13] EXCEPTION: (Exception) You must attachAuthority() first! at [/opt/phabricator/phabricator/src/applications/differential/storage/DifferentialReviewer.php:44]"
  #0 DifferentialReviewer::hasAuthority(Object PhabricatorUser) called at [/opt/phabricator/phabricator/src/applications/differential/editor/DifferentialTransactionEditor.php:354]"
  #1 DifferentialTransactionEditor::expandTransaction(Object DifferentialRevision, Object DifferentialTransaction) called at [/opt/phabricator/phabricator/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php:1006]"
  #2 PhabricatorApplicationTransactionEditor::expandTransactions(Object DifferentialRevision, Array of size 2 starting with: { 0 => Object DifferentialTransaction }) called at [/opt/phabricator/phabricator/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php:502]"
  #3 PhabricatorApplicationTransactionEditor::applyTransactions(Object DifferentialRevision, Array of size 2 starting with: { 0 => Object DifferentialTransaction }) called at [/opt/phabricator/phabricator/src/applications/differential/conduit/ConduitAPI_differential_createcomment_Method.php:82]"
  #4 ConduitAPI_differential_createcomment_Method::execute(Object ConduitAPIRequest) called at [/opt/phabricator/phabricator/src/applications/conduit/method/ConduitAPIMethod.php:67]"
  #5 ConduitAPIMethod::executeMethod(Object ConduitAPIRequest) called at [/opt/phabricator/phabricator/src/applications/conduit/call/ConduitCall.php:163]"
  #6 ConduitCall::executeMethod() called at [/opt/phabricator/phabricator/src/applications/conduit/call/ConduitCall.php:90]"
  #7 ConduitCall::execute() called at [/opt/phabricator/phabricator/src/applications/conduit/controller/PhabricatorConduitAPIController.php:91]"
  #8 PhabricatorConduitAPIController::processRequest() called at [/opt/phabricator/phabricator/webroot/index.php:87]