When submitting an 'arc diff' to a PHP 8.1 Phorge server, in which unit tests are done, 'arc diff' returns the error:
EXCEPTION: (ConduitClientException) ERR-CONDUIT-CORE: <harbormaster.sendmessage> strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [<arcanist>/src/conduit/ConduitFuture.php:70] arcanist(head=master, ref.master=8130241a11ac, custom=4) #0 <#2> ConduitFuture::didReceiveResult(array) called at [<arcanist>/src/future/FutureProxy.php:40] #1 <#2> FutureProxy::isReady() called at [<arcanist>/src/future/Future.php:63] #2 <#2> Future::updateFuture() called at [<arcanist>/src/future/FutureIterator.php:224] #3 <#2> FutureIterator::next() called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:2845] #4 phlog(ConduitClientException) called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:2852] #5 ArcanistDiffWorkflow::updateAutotargets(string, integer) called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:402] #6 ArcanistDiffWorkflow::run() called at [<arcanist>/scripts/arcanist.php:427]
and the following stack trace is generated:
EXCEPTION: (RuntimeException) strlen(): Passing null to parameter #1 ($string) of type string is deprecated at [<arcanist>/src/error/PhutilErrorHandler.php:261]PHP message: arcanist(head=master, ref.master=8130241a11ac, custom=4), phorge(head=master, ref.master=7c1487e4dcfa)PHP message: #0 <#2> PhutilErrorHandler::handleError(integer, string, string, integer) called at [<phorge>/src/applications/harbormaster/storage/build/HarbormasterBuildUnitMessage.php:105]PHP message: #1 <#2> HarbormasterBuildUnitMessage::newFromDictionary(HarbormasterBuildTarget, array) called at [<phorge>/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php:597]PHP message: #2 <#2> HarbormasterSendMessageConduitAPIMethod::sendToTarget(ConduitAPIRequest, string, HarbormasterBuildTarget) called at [<phorge>/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php:546]PHP message: #3 <#2> HarbormasterSendMessageConduitAPIMethod::execute(ConduitAPIRequest) called at [<phorge>/src/applications/conduit/method/ConduitAPIMethod.php:156]PHP message: #4 <#2> ConduitAPIMethod::executeMethod(ConduitAPIRequest) called at [<phorge>/src/applications/conduit/call/ConduitCall.php:131]PHP message: #5 <#2> ConduitCall::executeMethod() called at [<phorge>/src/applications/conduit/call/ConduitCall.php:81]PHP message: #6 <#2> ConduitCall::execute() called at [<phorge>/src/applications/conduit/controller/PhabricatorConduitAPIController.php:83]PHP message: #7 phlog(RuntimeException) called at [<phorge>/src/applications/conduit/controller/PhabricatorConduitAPIController.php:111]PHP message: #8 PhabricatorConduitAPIController::handleRequest(AphrontRequest) called at [<phorge>/src/aphront/configuration/AphrontApplicationConfiguration.php:284]PHP message: #9 AphrontApplicationConfiguration::processRequest(AphrontRequest, PhutilDeferredLog, AphrontPHPHTTPSink, MultimeterControl) called at [<phorge>/src/aphront/configuration/AphrontApplicationConfiguration.php:204]PHP message: #10 AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phorge>/webroot/index.php:35]'