Label column not found in the table to add in addDataTable

Matomo 3.13.3
Google Analytics Import

The archiver seems to have problem with the imported GA website. Every hour the crontab throws this error:

ERROR [2020-03-17 12:05:26] 1020493  Got invalid response from API request: ?module=API&method=API.get&idSite=9&period=week&date=last18&format=php&trigger=archivephp. Response was 'a:2:{s:6:"result";s:5:"error";s:7:"message";s:12021:"Label column not found in the table to add in addDataTable() - in plugin Referrers #0 /home/webstat/core/ArchiveProcessor/Loader.php(133): Piwik\ArchiveProcessor\PluginsArchiver->callAggregateAllPlugins(5369, 7, false) #1 /home/webstat/core/ArchiveProcessor/Loader.php(79): Piwik\ArchiveProcessor\Loader->prepareAllPluginsArchive(5369, 7) #2 /home/webstat/core/ArchiveProcessor/Loader.php(60): Piwik\ArchiveProcessor\Loader->prepareArchiveImpl('VisitsSummary') #3 /home/webstat/core/Context.php(75): Piwik\ArchiveProcessor\Loader->Piwik\ArchiveProcessor\{closure}() #4 /home/webstat/core/ArchiveProcessor/Loader.php(61): Piwik\Context::changeIdSite(9, Object(Closure)) #5 /home/webstat/core/Archive.php(871): Piwik\ArchiveProcessor\Loader->prepareArchive('VisitsSummary') #6 /home/webstat/core/Archive.php(678): Piwik\Archive->prepareArchive(Array, Object(Piwik\Site), Object(Piwik\Period\Week)) #7 /home/webstat/core/Archive.php(620): Piwik\Archive->cacheArchiveIdsAfterLaunching(Array, Array) #8 /home/webstat/core/Archive.php(549): Piwik\Archive->getArchiveIds(Array) #9 /home/webstat/core/Archive.php(303): Piwik\Archive->get(Array, 'numeric') #10 /home/webstat/plugins/VisitsSummary/API.php(36): Piwik\Archive->getDataTableFromNumeric(Array) #11 [internal function]: Piwik\Plugins\VisitsSummary\API->get('9', 'week', 'last18', false, Array) #12 /home/webstat/core/API/Proxy.php(237): call_user_func_array(Array, Array) #13 /home/webstat/core/Context.php(28): Piwik\API\Proxy->Piwik\API\{closure}() #14 /home/webstat/core/API/Proxy.php(328): Piwik\Context::executeWithQueryParameters(Array, Object(Closure)) #15 /home/webstat/plugins/API/API.php(435): Piwik\API\Proxy->call('\\Piwik\\Plugins\\...', 'get', Array) #16 [internal function]: Piwik\Plugins\API\API->get('9', 'week', 'last18', false, Array) #17 /home/webstat/core/API/Proxy.php(237): call_user_func_array(Array, Array) #18 /home/webstat/core/Context.php(28): Piwik\API\Proxy->Piwik\API\{closure}() #19 /home/webstat/core/API/Proxy.php(328): Piwik\Context::executeWithQueryParameters(Array, Object(Closure)) #20 /home/webstat/core/API/Request.php(266): Piwik\API\Proxy->call('\\Piwik\\Plugins\\...', 'get', Array) #21 /home/webstat/plugins/API/Controller.php(41): Piwik\API\Request->process() #22 [internal function]: Piwik\Plugins\API\Controller->index() #23 /home/webstat/core/FrontController.php(589): call_user_func_array(Array, Array) #24 /home/webstat/core/FrontController.php(165): Piwik\FrontController->doDispatch('API', false, Array) #25 /home/webstat/core/dispatch.php(34): Piwik\FrontController->dispatch() #26 /home/webstat/index.php(27): require_once('/home/...') #27 /home/webstat/core/CliMulti/RequestCommand.php(79): require_once('/home/...') #28 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Command/Command.php(257): Piwik\CliMulti\RequestCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #29 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Application.php(874): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #30 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Application.php(195): Symfony\Component\Console\Application->doRunCommand(Object(Piwik\CliMulti\RequestCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #31 [internal function]: Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #32 /home/webstat/core/Console.php(140): call_user_func(Array, Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #33 /home/webstat/core/Access.php(644): Piwik\Console->Piwik\{closure}() #34 /home/webstat/core/Console.php(141): Piwik\Access::doAsSuperUser(Object(Closure)) #35 /home/webstat/core/Console.php(93): Piwik\Console->doRunImpl(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #36 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Application.php(126): Piwik\Console->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #37 /home/webstat/console(32): Symfony\Component\Console\Application->run() #38 {main}, caused by: Label column not found in the table to add in addDataTable() #0 /home/webstat/core/DataTable.php(644): Piwik\DataTable->aggregateRowWithLabel(Object(Piwik\DataTable\Row), false) #1 /home/webstat/core/DataTable/Row.php(298): Piwik\DataTable->addDataTable(Object(Piwik\DataTable)) #2 /home/webstat/core/DataTable.php(1916): Piwik\DataTable\Row->sumSubtable(Object(Piwik\DataTable)) #3 /home/webstat/core/DataTable.php(644): Piwik\DataTable->aggregateRowWithLabel(Object(Piwik\DataTa
ERROR [2020-03-17 12:05:29] 1020493  1 total errors during this script execution, please investigate and try and fix these errors.
ERROR [2020-03-17 12:05:29] 1020493  Uncaught exception: /home/webstat/core/CronArchive.php(602): 1 total errors during this script execution, please investigate and try and fix these errors.
1 total errors during this script execution, please investigate and try and fix these errors.
#0 /home/webstat/core/CronArchive.php(595): Piwik\CronArchive->logFatalError('1 total errors ...')
#1 /home/webstat/core/CronArchive.php(330): Piwik\CronArchive->end()
#2 /home/webstat/core/Access.php(635): Piwik\CronArchive->Piwik\{closure}()
#3 /home/webstat/core/CronArchive.php(331): Piwik\Access::doAsSuperUser(Object(Closure))
#4 /home/webstat/plugins/CoreConsole/Commands/CoreArchiver.php(27): Piwik\CronArchive->main()
#5 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Command/Command.php(257): Piwik\Plugins\CoreConsole\Commands\CoreArchiver->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#6 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Application.php(874): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#7 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Application.php(195): Symfony\Component\Console\Application->doRunCommand(Object(Piwik\Plugins\CoreConsole\Commands\CoreArchiver), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#8 [internal function]: Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#9 /home/webstat/core/Console.php(140): call_user_func(Array, Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#10 /home/webstat/core/Access.php(644): Piwik\Console->Piwik\{closure}()
#11 /home/webstat/core/Console.php(141): Piwik\Access::doAsSuperUser(Object(Closure))
#12 /home/webstat/core/Console.php(93): Piwik\Console->doRunImpl(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#13 /home/webstat/vendor/symfony/console/Symfony/Component/Console/Application.php(126): Piwik\Console->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#14 /home/webstat/console(32): Symfony\Component\Console\Application->run()
#15 {main}

The GA site is id 9