Started to get the following Exception following the server
's Centos RPMs being updated:
```
PHP message: [2024-04-30 09:23:46] EXCEPTION: (Exception) Imbalanced AphrontWriteGuard: more beginUnguardedWrites() calls than endUnguardedWrites() calls. at [<phorge>/src/aphront/writeguard/AphrontWriteGuard.php:99]
PHP message: arcanist(head=master, ref.master=ba42b63704b2, custom=4), phorge(head=master, ref.master=318d7a61feab)
PHP message: #0 <#2> AphrontWriteGuard::dispose() called at [<phorge>/src/aphront/configuration/AphrontApplicationConfiguration.php:214]
PHP message: #1 <#2> AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phorge>/webroot/index.php:35]
PHP message: #2 phlog(Exception) called at [<phorge>/src/aphront/response/AphrontUnhandledExceptionResponse.php:32]
PHP message: #3 AphrontUnhandledExceptionResponse::setException(Exception) called at [<phorge>/webroot/index.php:46]
```
This exception would be triggered by running arc diff or arc branches
The fix is:
```
--- a/src/applications/conduit/controller/PhabricatorConduitAPIController.php
+++ b/src/applications/conduit/controller/PhabricatorConduitAPIController.php
@@ -76,7 +76,7 @@ final class PhabricatorConduitAPIController
if ($auth_error === null) {
if ($allow_unguarded_writes) {
- $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
+ AphrontWriteGuard::beginUnguardedWrites();
}
try {
@@ -92,8 +92,9 @@ final class PhabricatorConduitAPIController
$error_info = $call->getErrorDescription($error_code);
}
}
+
if ($allow_unguarded_writes) {
- unset($unguarded);
+ AphrontWriteGuard::endUnguardedWrites();
}
} else {
list($error_code, $error_info) = $auth_error;
```