Exception: No handler for type [string] declared on field [transaction] about audit-stash HOT 2 CLOSED

public function main($table)
{
    $table = TableRegistry::get($table);
    $schema = $table->schema();
    $mapping = [
        '@timestamp' => ['type' => 'date', 'format' => 'basic_t_time_no_millis||dateOptionalTime||basic_date_time||ordinal_date_time_no_millis||yyyy-MM-dd HH:mm:ss'],
        'transaction' => ['type' => 'text', 'index' => 'false'],
        'type' => ['type' => 'text', 'index' => 'false'],
        'primary_key' => ['type' => 'text', 'index' => 'false'],
        'source' => ['type' => 'text', 'index' => 'false'],
        'parent_source' => ['type' => 'text', 'index' => 'false'],
        'original' => [
            'properties' => []
        ],
        'changed' => [
            'properties' => []
        ],
        'meta' => [
            'properties' => [
                'ip' => ['type' => 'text', 'index' => 'false'],
                'url' => ['type' => 'text', 'index' => 'false'],
                'user' => ['type' => 'text', 'index' => 'false'],
                'app_name' => ['type' => 'text', 'index' => 'false']
            ]
        ]
    ];

    $properties = [];
    foreach ($schema->columns() as $column) {
        $properties[$column] = $this->mapType($schema, $column);
    }

    if ($table->hasBehavior('AuditLog')) {
        $whitelist = (array)$table->behaviors()->AuditLog->config('whitelist');
        $blacklist = (array)$table->behaviors()->AuditLog->config('blacklist');
        $properties = empty($whitelist) ? $properties : array_intersect_key($properties, array_flip($whitelist));
        $properties = array_diff_key($properties, array_flip($blacklist));
    }

    $mapping['original']['properties'] = $mapping['changed']['properties'] = $properties;
    $client = ConnectionManager::get('auditlog_elastic');
    $index = $client->getIndex(sprintf($client->getConfig('index'), '-' . gmdate('Y.m.d')));
    $type = $index->getType($table->table());
    $elasticMapping = new ElasticaMapping();
    $elasticMapping->setType($type);
    $elasticMapping->setProperties($mapping);

    if ($this->params['dry-run']) {
        $this->out(json_encode($elasticMapping->toArray(), JSON_PRETTY_PRINT));
        return true;
    }

    if ($this->params['use-templates']) {
        $template = [
            'template' => sprintf($client->getConfig('index'), '*'),
            'mappings' => $elasticMapping->toArray()
        ];
        $response = $client->request('_template/template_' . $type->getName(), Request::PUT, $template);
        $this->out('<success>Successfully created the mapping template</success>');
        return $response->isOk();
    }

    if (!$index->exists()) {
        $index->create();
    }

    $elasticMapping->send();
    $this->out('<success>Successfully created the mapping</success>');
    return true;
}

protected function mapType($schema, $column)
{
    $baseType = $schema->baseColumnType($column);
    switch ($baseType) {
    case 'uuid':
        return ['type' => 'text', 'index' => 'false', 'null_value' => '_null_'];
    case 'integer':
        return ['type' => 'long', 'null_value' => ~PHP_INT_MAX];
    case 'date':
        return ['type' => 'date', 'format' => 'dateOptionalTime||basic_date||yyy-MM-dd', 'null_value' => '0001-01-01'];
    case 'datetime':
    case 'timestamp':
        return ['type' => 'date', 'format' => 'basic_t_time_no_millis||dateOptionalTime||basic_date_time||ordinal_date_time_no_millis||yyyy-MM-dd HH:mm:ss||basic_date', 'null_value' => '0001-01-01 00:00:00'];
    case 'float':
    case 'decimal':
        return ['type' => 'double', 'null_value' => ~PHP_INT_MAX];
    case 'float':
    case 'decimal':
        return ['type' => 'double', 'null_value' => ~PHP_INT_MAX];
    case 'boolean':
        return ['type' => 'boolean'];
    default:
        return [
            'type' => 'multi_field',
            'fields' => [
                $column => ['type' => 'text', 'null_value' => '_null_'],
                'raw' => ['type' => 'text', 'index' => 'false', 'null_value' => '_null_', 'ignore_above' => 256]
            ]
        ];
    }
}