Code:
Warning: array_keys() expects parameter 1 to be array, string given in composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php on line 137
#0 [internal function]: __error(2, 'array_keys() ex...', '/var/www/virtua...', 137, Array)
#1 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php(137): array_keys('Referenzalias')
#2 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(82): MetaModels\Dca\Helper->makeMultiColumnName(Object(MetaModels\MetaModel), 'Sprache', 'Beschreibung', false, 'Referenzalias')
#3 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(133): MetaModels\Dca\Attribute->setNameAndDescription(Object(MetaModels\MetaModel), Object(MetaModels\Attribute\Alias\Alias))
#4 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/Callbacks/ContaoStyleCallbacks.php(425): MetaModels\Dca\Attribute->onLoadCallback(Object(DC_General))
#5 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/DC_General.php(342): DcGeneral\Callbacks\ContaoStyleCallbacks->onloadCallback('tl_metamodel_at...')
#6 system/modules/core/classes/Backend.php(258): DcGeneral\DC_General->__construct('tl_metamodel_at...', Array)
#7 contao/main.php(136): Contao\Backend->getBackendModule('metamodels')
#8 contao/main.php(287): Main->run()
#9 {main}
Warning: Invalid argument supplied for foreach() in composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php on line 137
#0 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php(137): __error(2, 'Invalid argumen...', '/var/www/virtua...', 137, Array)
#1 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(82): MetaModels\Dca\Helper->makeMultiColumnName(Object(MetaModels\MetaModel), 'Sprache', 'Beschreibung', false, 'Referenzalias')
#2 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(133): MetaModels\Dca\Attribute->setNameAndDescription(Object(MetaModels\MetaModel), Object(MetaModels\Attribute\Alias\Alias))
#3 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/Callbacks/ContaoStyleCallbacks.php(425): MetaModels\Dca\Attribute->onLoadCallback(Object(DC_General))
#4 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/DC_General.php(342): DcGeneral\Callbacks\ContaoStyleCallbacks->onloadCallback('tl_metamodel_at...')
#5 system/modules/core/classes/Backend.php(258): DcGeneral\DC_General->__construct('tl_metamodel_at...', Array)
#6 contao/main.php(136): Contao\Backend->getBackendModule('metamodels')
#7 contao/main.php(287): Main->run()
#8 {main}
Warning: array_keys() expects parameter 1 to be array, string given in composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php on line 137
#0 [internal function]: __error(2, 'array_keys() ex...', '/var/www/virtua...', 137, Array)
#1 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php(137): array_keys('Alias der Refer...')
#2 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(93): MetaModels\Dca\Helper->makeMultiColumnName(Object(MetaModels\MetaModel), 'Sprache', 'Beschreibung', true, 'Alias der Refer...')
#3 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(133): MetaModels\Dca\Attribute->setNameAndDescription(Object(MetaModels\MetaModel), Object(MetaModels\Attribute\Alias\Alias))
#4 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/Callbacks/ContaoStyleCallbacks.php(425): MetaModels\Dca\Attribute->onLoadCallback(Object(DC_General))
#5 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/DC_General.php(342): DcGeneral\Callbacks\ContaoStyleCallbacks->onloadCallback('tl_metamodel_at...')
#6 system/modules/core/classes/Backend.php(258): DcGeneral\DC_General->__construct('tl_metamodel_at...', Array)
#7 contao/main.php(136): Contao\Backend->getBackendModule('metamodels')
#8 contao/main.php(287): Main->run()
#9 {main}
Warning: Invalid argument supplied for foreach() in composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php on line 137
#0 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Helper.php(137): __error(2, 'Invalid argumen...', '/var/www/virtua...', 137, Array)
#1 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(93): MetaModels\Dca\Helper->makeMultiColumnName(Object(MetaModels\MetaModel), 'Sprache', 'Beschreibung', true, 'Alias der Refer...')
#2 composer/vendor/metamodels/core/src/system/modules/metamodels/MetaModels/Dca/Attribute.php(133): MetaModels\Dca\Attribute->setNameAndDescription(Object(MetaModels\MetaModel), Object(MetaModels\Attribute\Alias\Alias))
#3 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/Callbacks/ContaoStyleCallbacks.php(425): MetaModels\Dca\Attribute->onLoadCallback(Object(DC_General))
#4 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/DC_General.php(342): DcGeneral\Callbacks\ContaoStyleCallbacks->onloadCallback('tl_metamodel_at...')
#5 system/modules/core/classes/Backend.php(258): DcGeneral\DC_General->__construct('tl_metamodel_at...', Array)
#6 contao/main.php(136): Contao\Backend->getBackendModule('metamodels')
#7 contao/main.php(287): Main->run()
#8 {main}
Warning: array_keys() expects parameter 1 to be array, string given in composer/vendor/metamodels/attribute_translatedtabletext/src/system/modules/metamodelsattribute_translatedtabletext/TableMetaModelsAttributeTranslatedTableText.php on line 167
#0 [internal function]: __error(2, 'array_keys() ex...', '/var/www/virtua...', 167, Array)
#1 composer/vendor/metamodels/attribute_translatedtabletext/src/system/modules/metamodelsattribute_translatedtabletext/TableMetaModelsAttributeTranslatedTableText.php(167): array_keys('Referenzalias')
#2 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/Callbacks/ContaoStyleCallbacks.php(425): TableMetaModelsAttributeTranslatedTableText->loadTableTextCols(Object(DC_General))
#3 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/DC_General.php(342): DcGeneral\Callbacks\ContaoStyleCallbacks->onloadCallback('tl_metamodel_at...')
#4 system/modules/core/classes/Backend.php(258): DcGeneral\DC_General->__construct('tl_metamodel_at...', Array)
#5 contao/main.php(136): Contao\Backend->getBackendModule('metamodels')
#6 contao/main.php(287): Main->run()
#7 {main}
Warning: Invalid argument supplied for foreach() in composer/vendor/metamodels/attribute_translatedtabletext/src/system/modules/metamodelsattribute_translatedtabletext/TableMetaModelsAttributeTranslatedTableText.php on line 167
#0 composer/vendor/metamodels/attribute_translatedtabletext/src/system/modules/metamodelsattribute_translatedtabletext/TableMetaModelsAttributeTranslatedTableText.php(167): __error(2, 'Invalid argumen...', '/var/www/virtua...', 167, Array)
#1 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/Callbacks/ContaoStyleCallbacks.php(425): TableMetaModelsAttributeTranslatedTableText->loadTableTextCols(Object(DC_General))
#2 composer/vendor/metamodels/dc_general/system/modules/generalDriver/DcGeneral/DC_General.php(342): DcGeneral\Callbacks\ContaoStyleCallbacks->onloadCallback('tl_metamodel_at...')
#3 system/modules/core/classes/Backend.php(258): DcGeneral\DC_General->__construct('tl_metamodel_at...', Array)
#4 contao/main.php(136): Contao\Backend->getBackendModule('metamodels')
#5 contao/main.php(287): Main->run()
#6 {main}
Warning: Cannot modify header information - headers already sent by (output started at /neu/htdocs/system/helper/functions.php:70) in system/modules/core/library/Contao/Template.php on line 298
#0 [internal function]: __error(2, 'Cannot modify h...', '/var/www/virtua...', 298, Array)
#1 system/modules/core/library/Contao/Template.php(298): header('Vary: User-Agen...', false)
#2 system/modules/core/classes/BackendTemplate.php(162): Contao\Template->output()
#3 contao/main.php(278): Contao\BackendTemplate->output()
#4 contao/main.php(140): Main->output()
#5 contao/main.php(287): Main->run()
#6 {main}
Warning: Cannot modify header information - headers already sent by (output started at /neu/htdocs/system/helper/functions.php:70) in system/modules/core/library/Contao/Template.php on line 299
#0 [internal function]: __error(2, 'Cannot modify h...', '/var/www/virtua...', 299, Array)
#1 system/modules/core/library/Contao/Template.php(299): header('Content-Type: t...')
#2 system/modules/core/classes/BackendTemplate.php(162): Contao\Template->output()
#3 contao/main.php(278): Contao\BackendTemplate->output()
#4 contao/main.php(140): Main->output()
#5 contao/main.php(287): Main->run()
#6 {main}
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