EXCEPTION (RuntimeException): Undefined variable: xaction #0 /var/www/html/dev/core/lib/phabricator/src/applications/conpherence/editor/ConpherenceEditor.php(481): PhutilErrorHandler::handleError(8, 'Undefined varia...', '/var/www/html/d...', 481, Array) #1 /var/www/html/dev/core/lib/phabricator/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php(1107): ConpherenceEditor->getMailTo(Object(ConpherenceThread)) #2 /var/www/html/dev/core/lib/phabricator/src/applications/conpherence/__tests__/ConpherenceRoomTestCase.php(133): PhabricatorApplicationTransactionEditor->applyTransactions(Object(ConpherenceThread), Array) #3 /var/www/html/dev/core/lib/phabricator/src/applications/conpherence/__tests__/ConpherenceRoomTestCase.php(57): ConpherenceRoomTestCase->createRoom(Object(PhabricatorUser), Array) #4 [internal function]: ConpherenceRoomTestCase->testRoomParticipantAddition() #5 /var/www/html/dev/core/lib/arcanist/src/unit/engine/phutil/PhutilTestCase.php(492): call_user_func_array(Array, Array) #6 /var/www/html/dev/core/lib/arcanist/src/unit/engine/PhutilUnitTestEngine.php(69): PhutilTestCase->run() #7 /var/www/html/dev/core/lib/arcanist/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php(147): PhutilUnitTestEngine->run() #8 /var/www/html/dev/core/lib/arcanist/src/workflow/ArcanistUnitWorkflow.php(167): ArcanistConfigurationDrivenUnitTestEngine->run() #9 /var/www/html/dev/core/lib/arcanist/src/workflow/ArcanistDiffWorkflow.php(1340): ArcanistUnitWorkflow->run() #10 /var/www/html/dev/core/lib/arcanist/src/workflow/ArcanistDiffWorkflow.php(1228): ArcanistDiffWorkflow->runUnit() #11 /var/www/html/dev/core/lib/arcanist/src/workflow/ArcanistDiffWorkflow.php(483): ArcanistDiffWorkflow->runLintUnit() #12 /var/www/html/dev/core/lib/arcanist/scripts/arcanist.php(394): ArcanistDiffWorkflow->run() #13 {main}