EXCEPTION (PhutilTypeCheckException): Parameter 'region' has invalid type. Expected type 'string', got type 'null'. #0 /core/data/drydock/workingcopy-74/repo/arcanist/src/parser/PhutilTypeSpec.php(169): PhutilTypeSpec->check(NULL, 'region') #1 /core/data/drydock/workingcopy-74/repo/phabricator/src/applications/metamta/adapter/PhabricatorMailAmazonSESAdapter.php(22): PhutilTypeSpec::checkMap(Array, Array) #2 /core/data/drydock/workingcopy-74/repo/phabricator/src/applications/metamta/adapter/PhabricatorMailAdapter.php(132): PhabricatorMailAmazonSESAdapter->validateOptions(Array) #3 /core/data/drydock/workingcopy-74/repo/phabricator/src/applications/metamta/adapter/__tests__/PhabricatorMailAdapterTestCase.php(87): PhabricatorMailAdapter->setOptions(Array) #4 [internal function]: PhabricatorMailAdapterTestCase->testSupportsMessageID() #5 /core/data/drydock/workingcopy-74/repo/arcanist/src/unit/engine/phutil/PhutilTestCase.php(493): call_user_func_array(Array, Array) #6 /core/data/drydock/workingcopy-74/repo/arcanist/src/unit/engine/PhutilUnitTestEngine.php(69): PhutilTestCase->run() #7 /core/data/drydock/workingcopy-74/repo/arcanist/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php(148): PhutilUnitTestEngine->run() #8 /core/data/drydock/workingcopy-74/repo/arcanist/src/workflow/ArcanistUnitWorkflow.php(170): ArcanistConfigurationDrivenUnitTestEngine->run() #9 /core/data/drydock/workingcopy-74/repo/arcanist/scripts/arcanist.php(419): ArcanistUnitWorkflow->run() #10 {main}