Resolved Backup Manager

[blackbird71]

Server operating system version

Ubuntu 18.04.6 LTS

Plesk version and microupdate number

Plesk Obsidian 18.0.62.2

Hello,

for some time now I have a problem with Plesk Backup Manager. All Backups fail with following Error Message for each Subscription/Domain:

JMS\Serializer\Type\Parser::getConstant(): Argument #1 ($value) must be of type int, null given, called in /opt/psa/admin/plib/vendor/jms/serializer/src/Type/Parser.php on line 69


I tried to track down the error in the backup.log an found that the problem happens while parsing /opt/psa/admin/plib/backup/Agent/Dumper/../Schema/BackupMeta/MigrationDump.MigrationDumpAType.yml

But I didn't get any further than that. Maybe someone had the same problem or any idea how to find a solution?

 

[Kaspar@Plesk]

Are there any related errors in panel.log file (Tools & Settings > Log Browser > Plesk)?

 

[blackbird71]

Are there any related errors in panel.log file (Tools & Settings > Log Browser > Plesk)?

I only have Tools & Settings > Plesk > Action Log, there is nothing related.

 

[Kaspar@Plesk]

In that case either install Log Browser extension to view the panel.log file directly from within Plesk or connect via SSH and open the file /var/log/plesk/panel.log to search for related errors to backup.

If you like support to assist with this issue, don't hesitate to open a support ticket. To sign-in to support and open a ticket go to https://support.plesk.com.

If you got your license from a reseller, your reseller should provide support for you. If the reseller does not provide support, here is an alternative to get support directly from Plesk: https://support.plesk.com/hc/en-us/articles/12388090147095-How-to-get-support-directly-from-Plesk

 

[blackbird71]

There are no related logs. Started another Backup and no logs from the same time.

Only in backup.log I get this:

[2024-08-02 13:48:09.631|39568] DEBUG [panel] Backup filename /var/lib/psa/dumps/domains/######/backup_info_2408021348.xml
[2024-08-02 13:48:09.639|39568] ERR [panel] Exception: PHP Warning: Attempt to read property "type" on array; File: /opt/psa/admin/plib/vendor/jms/serializer/src/Type/Parser.php, Line: 46
file: /opt/psa/admin/plib/Smb/Exception/Syntax.php
line: 56
code: 0
trace: #0 /opt/psa/admin/plib/vendor/jms/serializer/src/Type/Parser.php(46): Smb_Exception_Syntax::handleError(integer '2', string 'Attempt to read property "type" on array', string '/opt/psa/admin/plib/vendor/jms/serializer/src/Type/Parser.php', integer '46')
#1 /opt/psa/admin/plib/vendor/jms/serializer/src/Type/Parser.php(30): JMS\Serializer\Type\Parser->visit()
#2 /opt/psa/admin/plib/vendor/jms/serializer/src/Metadata/Driver/YamlDriver.php(206): JMS\Serializer\Type\Parser->parse(string 'string')
#3 /opt/psa/admin/plib/vendor/jms/serializer/src/Metadata/Driver/YamlDriver.php(65): JMS\Serializer\Metadata\Driver\YamlDriver->loadMetadataFromFile(object of type ReflectionClass, string '/opt/psa/admin/plib/backup/Agent/Dumper/../Schema/BackupMeta/MigrationDump.MigrationDumpAType.yml')
#4 /opt/psa/admin/plib/vendor/jms/metadata/src/Driver/DriverChain.php(32): JMS\Serializer\Metadata\Driver\YamlDriver->loadMetadataForClass(object of type ReflectionClass)
#5 /opt/psa/admin/plib/vendor/jms/serializer/src/Metadata/Driver/TypedPropertiesDriver.php(69): Metadata\Driver\DriverChain->loadMetadataForClass(object of type ReflectionClass)
#6 /opt/psa/admin/plib/vendor/jms/serializer/src/Metadata/Driver/DefaultValuePropertyDriver.php(32): JMS\Serializer\Metadata\Driver\TypedPropertiesDriver->loadMetadataForClass(object of type ReflectionClass)
#7 /opt/psa/admin/plib/vendor/jms/metadata/src/MetadataFactory.php(111): JMS\Serializer\Metadata\Driver\DefaultValuePropertyDriver->loadMetadataForClass(object of type ReflectionClass)
#8 /opt/psa/admin/plib/vendor/jms/serializer/src/GraphNavigator/SerializationGraphNavigator.php(222): Metadata\MetadataFactory->getMetadataForClass(string 'Plesk\backup\Agent\Schema\Backup\MigrationDump')
#9 /opt/psa/admin/plib/vendor/jms/serializer/src/Serializer.php(256): JMS\Serializer\GraphNavigator\SerializationGraphNavigator->accept(object of type Plesk\backup\Agent\Schema\Backup\MigrationDump, array)
#10 /opt/psa/admin/plib/vendor/jms/serializer/src/Serializer.php(163): JMS\Serializer\Serializer->visit(object of type JMS\Serializer\GraphNavigator\SerializationGraphNavigator, object of type JMS\Serializer\XmlSerializationVisitor, object of type JMS\Serializer\SerializationContext, object of type Plesk\backup\Agent\Schema\Backup\MigrationDump, string 'xml', NULL null)
#11 /opt/psa/admin/plib/backup/Agent/Dumper/DumpObject.php(74): JMS\Serializer\Serializer->serialize(object of type Plesk\backup\Agent\Schema\Backup\MigrationDump, string 'xml')
#12 /opt/psa/admin/plib/backup/Agent/Dumper/Domain.php(67): Plesk\backup\Agent\Dumper\DumpObject->save(object of type Plesk\backup\Agent\Schema\Backup\MigrationDump, array)
#13 /opt/psa/admin/plib/backup/Agent/Dumper/Domain.php(30): Plesk\backup\Agent\Dumper\Domain->createDomainDump(object of type Db_Table_Row_Domain)
#14 /opt/psa/admin/plib/backup/Agent/CallHelper.php(52): Plesk\backup\Agent\Dumper\Domain->Plesk\backup\Agent\Dumper\{closure}(object of type Db_Table_Row_Domain)
#15 /opt/psa/admin/plib/backup/Agent/Dumper/Domain.php(37): Plesk\backup\Agent\Dumper\Base->iterateSafely(object of type Generator, object of type Closure, object of type Closure, object of type Closure)
#16 /opt/psa/admin/plib/backup/Agent/Dumper/Server.php(24): Plesk\backup\Agent\Dumper\Domain->createDomainDumps()
#17 /opt/psa/admin/plib/backup/Agent/Agent.php(160): Plesk\backup\Agent\Dumper\Server->createServerDump()
#18 /opt/psa/admin/plib/backup/Agent/CallHelper.php(20): Plesk\backup\Agent\Agent->Plesk\backup\Agent\{closure}()
#19 /opt/psa/admin/plib/backup/Agent/Agent.php(155): Plesk\backup\Agent\Agent->callSafely(object of type Closure, object of type Closure, object of type Closure)
#20 /opt/psa/admin/plib/backup/Agent/Agent.php(92): Plesk\backup\Agent\Agent->createDump()
#21 /opt/psa/admin/plib/api-common/cuBackupAgent.php(307): Plesk\backup\Agent\Agent->dump()
#22 /opt/psa/admin/plib/api-common/cuApp.php(79): cuBackupAgent->_dumpCommand(string '/opt/psa/PMM/sessions/2024-08-02-134758.739', string 'bc0f5218-5736-47dd-a4e8-f684e36ecfa4', string 'server', string '', NULL null, string '', string 'fast', NULL null, NULL null, NULL null, NULL null, string 'backup', string 'script', NULL null, NULL null, NULL null, NULL null, NULL null, NULL null, NULL null, string 'manual', string '/opt/psa/PMM/sessions/2024-08-02-134758.739/dump_description', string '', string '', string '')
#23 /opt/psa/admin/plib/api-common/cuApp.php(73): cuApp->_callCommandMethod(array)
#24 /opt/psa/admin/plib/api-common/cuApp.php(53): cuApp->_executeCommand()
#25 /opt/psa/admin/plib/api-common/CuExecutor.php(69): cuApp->runFromCliGate()
#26 /opt/psa/admin/plib/api-common/CuExecutor.php(131): CuExecutor->execUtil(string 'cuBackupAgent', string 'runFromCliGate')
#27 /opt/psa/admin/plib/api-cli/CliUtilityRunner.php(28): CuExecutor->run()
#28 /opt/psa/admin/plib/api-cli/CliUtilityRunner.php(37): CliUtilityRunner->run()
#29 /opt/psa/admin/sbin/backup_agent(3): require_once(string '/opt/psa/admin/plib/api-cli/CliUtilityRunner.php')

 

[Kaspar@Plesk]

Are you storing to backup to a remote location? if so, to where?

 

[blackbird71]

No remote storage, only local

 

[Kaspar@Plesk]

I am not sure what is causing the error you are encountering. I would recommend to open a support ticker with our support team for an investigation of the issue on your server. To sign-in to support and open a ticket go to https://support.plesk.com.

If you got your license from a reseller, your reseller should provide support for you. If the reseller does not provide support, here is an alternative to get support directly from Plesk: https://support.plesk.com/hc/en-us/articles/12388090147095-How-to-get-support-directly-from-Plesk

 

[blackbird71]

After some digging, plesk support discovered the issue was due to an outdated version of a WordPress plugin.

Thanks to support, they quickly identified and resolved the problem.