TypeError: Illegal offset type in isset or empty

when trying to export to CSV, i get TypeError: Illegal offset type in isset or empty in vendor/magento/module-ui/Model/Export/MetadataProvider.php:174

line 174 is if (isset($options[$column][$key])) {

public function getRowData(DocumentInterface $document, $fields, $options): array { $row = []; foreach ($fields as $column) { if (isset($options[$column])) { $key = $document->getCustomAttribute($column)->getValue(); if (isset($options[$column][$key])) { $row[] = $options[$column][$key]; } else { $row[] = ''; } } else { $row[] = $document->getCustomAttribute($column)->getValue(); } } return $row; } 

any help with this?