EXCEPTION: (ConduitClientException) ERR-CONDUIT-CORE: <differential.getcommitmessage> 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)

$ arc diff --trace
 ARGV  apps/arcanist/bin/arc diff --trace
>>> [1] (+0) <exec> $ php -f /apps/arcanist/scripts/arcanist.php -- diff --trace
 ARGV  /apps/arcanist/scripts/arcanist.php diff --trace
 LOAD  Loaded "arcanist" from "/apps/arcanist/src".
Config: Reading user configuration file "/export/home/testuser/.arcrc"...
Config: Did not find system configuration at "/etc/arcconfig".
Working Copy: Reading .arcconfig from "/home/testuser/TestRepository/.arcconfig".
Working Copy: Path "/home/testuser/TestRepository" is part of `git` working copy "/home/testuser/TestRepository".
Working Copy: Project root is at "/home/testuser/TestRepository".
Config: Did not find local configuration at "/home/testuser/TestRepository/.git/arc/config".
>>> [1] (+0) <http> https://my.phorge.site/api/user.whoami
<<< [1] (+206) <http> 206,142 us
>>> [2] (+212) <exec> $ git --version
<<< [2] (+219) <exec> 7,066 us
>>> [3] (+219) <exec> $ git status --porcelain=2 -z
<<< [3] (+227) <exec> 7,497 us
>>> [4] (+228) <event> diff.didCollectChanges <listeners = 0>
<<< [4] (+228) <event> 95 us
>>> [5] (+228) <exec> $ git rev-parse --verify HEAD^
<<< [5] (+234) <exec> 6,211 us
>>> [6] (+234) <exec> $ git rev-parse --abbrev-ref --symbolic-full-name '@{upstream}'
<<< [6] (+240) <exec> 5,463 us
>>> [7] (+240) <exec> $ git cat-file -t master
<<< [7] (+245) <exec> 5,271 us
>>> [8] (+246) <exec> $ git merge-base -- master HEAD
<<< [8] (+251) <exec> 5,589 us
>>> [9] (+251) <exec> $ git rev-parse HEAD
<<< [9] (+257) <exec> 5,112 us
>>> [10] (+257) <exec> $ git log --first-parent --format=medium 6c00c70575a2c4229ab86bfe4f0761df14ea0125..e6022da1e50f3fea7500bf1ef3d5d894727f454f --
<<< [10] (+262) <exec> 5,439 us
>>> [11] (+268) <http> https://my.phorge.site/api/differential.query
<<< [11] (+314) <http> 45,614 us
>>> [12] (+314) <exec> $ git rev-parse --git-dir
<<< [12] (+319) <exec> 5,214 us
>>> [13] (+320) <exec> $ git log e6022da1e50f3fea7500bf1ef3d5d894727f454f --not 6c00c70575a2c4229ab86bfe4f0761df14ea0125 --format='%H%x01%T%x01%P%x01%at%x01%an%x01%aE%x01%s%x01%s%n%n%b%x02' --
<<< [13] (+325) <exec> 5,758 us
>>> [14] (+326) <http> https://my.phorge.site/api/differential.parsecommitmessage
<<< [14] (+384) <http> 58,074 us
>>> [15] (+384) <http> https://my.phorge.site/api/differential.parsecommitmessage
<<< [15] (+433) <http> 48,283 us
>>> [16] (+433) <http> https://my.phorge.site/api/differential.parsecommitmessage
<<< [16] (+487) <http> 53,901 us
>>> [17] (+487) <event> diff.willBuildMessage <listeners = 0>
<<< [17] (+487) <event> 50 us
>>> [18] (+487) <http> https://my.phorge.site/api/differential.getcommitmessage
<<< [18] (+544) <http> 57,101 us

EXCEPTION: (ConduitClientException) ERR-CONDUIT-CORE: <differential.getcommitmessage> 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 ConduitFuture::didReceiveResult(array) called at [<arcanist>/src/future/FutureProxy.php:40]
  #1 FutureProxy::isReady() called at [<arcanist>/src/future/Future.php:63]
  #2 Future::updateFuture() called at [<arcanist>/src/future/FutureIterator.php:224]
  #3 FutureIterator::next() called at [<arcanist>/src/future/FutureIterator.php:190]
  #4 FutureIterator::rewind()
  #5 iterator_to_array(FutureIterator) called at [<arcanist>/src/future/FutureIterator.php:84]
  #6 FutureIterator::resolveAll() called at [<arcanist>/src/future/Future.php:47]
  #7 Future::resolve() called at [<arcanist>/src/conduit/ConduitClient.php:65]
  #8 ConduitClient::callMethodSynchronous(string, array) called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:1421]
  #9 ArcanistDiffWorkflow::getCommitMessageFromUser() called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:1337]
  #10 ArcanistDiffWorkflow::buildCommitMessage() called at [<arcanist>/src/workflow/ArcanistDiffWorkflow.php:351]
  #11 ArcanistDiffWorkflow::run() called at [<arcanist>/scripts/arcanist.php:427]

AH01071: Got error 'PHP message: [2023-06-30 07:55:39] 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/differential/conduit/DifferentialGetCommitMessageConduitAPIMethod.php:118]PHP message:
#1 <#2> DifferentialGetCommitMessageConduitAPIMethod::execute(ConduitAPIRequest) called at [<phorge>/src/applications/conduit/method/ConduitAPIMethod.php:156]PHP message:
#2 <#2> ConduitAPIMethod::executeMethod(ConduitAPIRequest) called at [<phorge>/src/applications/conduit/call/ConduitCall.php:131]PHP message:
#3 <#2> ConduitCall::executeMethod() called at [<phorge>/src/applications/conduit/call/ConduitCall.php:81]PHP message:
#4 <#2> ConduitCall::execute() called at [<phorge>/src/applications/conduit/controller/PhabricatorConduitAPIController.php:83]PHP message:
#5 phlog(RuntimeException) called at [<phorge>/src/applications/conduit/controller/PhabricatorConduitAPIController.php:111]PHP message:
#6 PhabricatorConduitAPIController::handleRequest(AphrontRequest) called at [<phorge>/src/aphront/configuration/AphrontApplicationConfiguration.php:284]PHP message:
#7 AphrontApplicationConfiguration::processRequest(AphrontRequest, PhutilDeferredLog, AphrontPHPHTTPSink, MultimeterControl) called at [<phorge>/src/aphront/configuration/AphrontApplicationConfiguration.php:204]PHP message:
#8 AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phorge>/webroot/index.php:35