EXCEPTION (RuntimeException): mb_encoding_aliases(): Handling Base64 via mbstring is deprecated; use base64_encode/base64_decode instead #0 [internal function]: PhutilErrorHandler::handleError(8192, '...', '...', 724) #1 /var/www/html/phorge/arcanist/src/utils/utf8.php(724): mb_encoding_aliases('...') #2 /var/www/html/phorge/arcanist/src/utils/__tests__/PhutilUTF8TestCase.php(492): phutil_utf8_convert('...', '...', '...') #3 /var/www/html/phorge/arcanist/src/unit/engine/phutil/PhutilTestCase.php(634): PhutilUTF8TestCase->testUTF8Convert() #4 /var/www/html/phorge/arcanist/src/unit/engine/PhutilUnitTestEngine.php(69): PhutilTestCase->run() #5 /var/www/html/phorge/arcanist/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php(148): PhutilUnitTestEngine->run() #6 /var/www/html/phorge/arcanist/src/workflow/ArcanistUnitWorkflow.php(170): ArcanistConfigurationDrivenUnitTestEngine->run() #7 /var/www/html/phorge/arcanist/src/workflow/ArcanistDiffWorkflow.php(1231): ArcanistUnitWorkflow->run() #8 /var/www/html/phorge/arcanist/src/workflow/ArcanistDiffWorkflow.php(1133): ArcanistDiffWorkflow->runUnit() #9 /var/www/html/phorge/arcanist/src/workflow/ArcanistDiffWorkflow.php(363): ArcanistDiffWorkflow->runLintUnit() #10 /var/www/html/phorge/arcanist/scripts/arcanist.php(427): ArcanistDiffWorkflow->run() #11 {main}