Magento – Import csv in magento 2 is not working and show error “invalidAttributeName”

Import csv in magento 2 : Duplicates found in column names

I want custom import data to custom table " profilers " but it not working and show this error.
I followed http://www.blogtreat.com/how-to-import-csv-file-to-custom-module-table-in-magento-2/
Please help me

My model

    <?php
namespace ...\Profilers\Model\ImportExport;

use ...\Profilers\Model\ImportExport\CustomImport\RowValidatorInterface as ValidatorInterface;
use Magento\ImportExport\Model\Import\ErrorProcessing\ProcessingErrorAggregatorInterface;

class Import extends \Magento\ImportExport\Model\Import\Entity\AbstractEntity
{
    const ID = 'id';
    const NAME = 'name';
    const ID_PROFILER = 'id_profiler';
    const FILE_PREFIX = 'file_prefix';
    const DELIMITER = 'delimiter';
    const DATA_SOURCE = 'data_source';
    const ENABLE_DISABLE = 'enable_disable';
    const FORMAT = 'format';
    const HOSTNAME = 'hostname';
    const USERNAME = 'username';
    const PASSWORD = 'password';
    const TYPE = 'type';
    const PORT = 'port';
    const LOCALFOLDER = 'localfolder';
    const DONE = 'done';
    const FOLDERFTP = 'folderftp';
    const DONEFOLDERFTP = 'donefolderftp';
    const LOCALFOLDERFTP = 'localfolderftp';
    const CODE = 'code';
    const SCHEDULE = 'schedule';
    const MAPING = 'mapping ';
    const ENABLELOCAL = 'enablelocal';
    const ENABLEFTP = 'enableftp';
    const IMPORT_EXPORT = 'import_export';
    const OUTPUTFORMAT = 'outputformat';


    const TABLE_ENTITY = 'profilers';

    /**
     * Validation failure message template definitions
     *
     * @var array
     */
    protected $_messageTemplates = [
        ValidatorInterface::ERROR_ID_IS_EMPTY => 'Empty',
    ];

    protected $_permanentAttributes = [self::ID];

    /**
     * If we should check column names
     *
     * @var bool
     */
    protected $needColumnCheck = true;

    /**
     * Valid column names
     *
     * @array
     */
    protected $validColumnNames = [
        self::ID,
        self::NAME,
        self::ID_PROFILER,
        self::FILE_PREFIX,
        self::DELIMITER,
        self::DATA_SOURCE,
        self::ENABLE_DISABLE,
        self::FORMAT,
        self::HOSTNAME,
        self::USERNAME,
        self::PASSWORD,
        self::TYPE,
        self::PORT,
        self::LOCALFOLDER,
        self::DONE,
        self::FOLDERFTP,
        self::DONEFOLDERFTP,
        self::LOCALFOLDERFTP,
        self::CODE,
        self::SCHEDULE,
        self::MAPING,
        self::ENABLELOCAL,
        self::ENABLEFTP,
        self::IMPORT_EXPORT,
        self::OUTPUTFORMAT,
    ];

    /**
     * Need to log in import history
     *
     * @var bool
     */
    protected $logInHistory = true;

    protected $_validators = [];

    /**
     * @var \Magento\Framework\Stdlib\DateTime\DateTime
     */
    protected $_connection;

    protected $_resource;

    /**
     * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
     */
    public function __construct(
        \Magento\Framework\Json\Helper\Data $jsonHelper,
        \Magento\ImportExport\Helper\Data $importExportData,
        \Magento\ImportExport\Model\ResourceModel\Import\Data $importData,
        \Magento\Framework\App\ResourceConnection $resource,
        \Magento\ImportExport\Model\ResourceModel\Helper $resourceHelper,
        \Magento\Framework\Stdlib\StringUtils $string,
        ProcessingErrorAggregatorInterface $errorAggregator
    ) {
        $this->jsonHelper = $jsonHelper;
        $this->_importExportData = $importExportData;
        $this->_resourceHelper = $resourceHelper;
        $this->_dataSourceModel = $importData;
        $this->_resource = $resource;
        $this->_connection = $resource->getConnection(\Magento\Framework\App\ResourceConnection::DEFAULT_CONNECTION);
        $this->errorAggregator = $errorAggregator;
    }

    public function getValidColumnNames() {
        return $this->validColumnNames;
    }

    /**
     * Entity type code getter.
     *
     * @return string
     */
    public function getEntityTypeCode() {
        return 'profilers';
    }

    /**
     * Row validation.
     *
     * @param array $rowData
     * @param int $rowNum
     * @return bool
     */
    public function validateRow(array $rowData, $rowNum) {
        $title = false;
        if (isset($this->_validatedRows[$rowNum])) {
            return !$this->getErrorAggregator()->isRowInvalid($rowNum);
        }

        $this->_validatedRows[$rowNum] = true;

        if (!isset($rowData[self::ID]) || empty($rowData[self::ID])) {
            $this->addRowError(ValidatorInterface::ERROR_MESSAGE_IS_EMPTY, $rowNum);
            return false;
        }
        return !$this->getErrorAggregator()->isRowInvalid($rowNum);
    }

    /**
     * Create advanced question data from raw data.
     *
     * @throws \Exception
     * @return bool Result of operation.
     */
    protected function _importData() {
        if (\Magento\ImportExport\Model\Import::BEHAVIOR_DELETE == $this->getBehavior()) {
            $this->deleteEntity();
        } elseif (\Magento\ImportExport\Model\Import::BEHAVIOR_REPLACE == $this->getBehavior()) {
            $this->replaceEntity();
        } elseif (\Magento\ImportExport\Model\Import::BEHAVIOR_APPEND == $this->getBehavior()) {
            $this->saveEntity();
        }
        return true;
    }

    /**
     * Save question
     *
     * @return $this
     */
    public function saveEntity() {
        $this->saveAndReplaceEntity();
        return $this;
    }

    /**
     * Replace question
     *
     * @return $this
     */
    public function replaceEntity() {
        $this->saveAndReplaceEntity();
        return $this;
    }

    /**
     * Deletes question data from raw data.
     *
     * @return $this
     */
    public function deleteEntity() {
        $ids = [];
        while ($bunch = $this->_dataSourceModel->getNextBunch()) {
            foreach ($bunch as $rowNum => $rowData) {
                $this->validateRow($rowData, $rowNum);
                if (!$this->getErrorAggregator()->isRowInvalid($rowNum)) {
                    $rowId = $rowData[self::ID];
                    $ids[] = $rowId;
                }
                if ($this->getErrorAggregator()->hasToBeTerminated()) {
                    $this->getErrorAggregator()->addRowToSkip($rowNum);
                }
            }
        }
        if ($ids) {
            $this->deleteEntityFinish(array_unique($ids),self::TABLE_ENTITY);
        }
        return $this;
    }

    /**
     * Save and replace question
     *
     * @return $this
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     * @SuppressWarnings(PHPMD.NPathComplexity)
     */
    protected function saveAndReplaceEntity() {
        $behavior = $this->getBehavior();
        $ids = [];
        while ($bunch = $this->_dataSourceModel->getNextBunch()) {
            $entityList = [];
            foreach ($bunch as $rowNum => $rowData) {
                if (!$this->validateRow($rowData, $rowNum)) {
                    $this->addRowError(ValidatorInterface::ERROR_MESSAGE_IS_EMPTY, $rowNum);
                    continue;
                }
                if ($this->getErrorAggregator()->hasToBeTerminated()) {
                    $this->getErrorAggregator()->addRowToSkip($rowNum);
                    continue;
                }
                $rowId= $rowData[self::ID];
                $ids[] = $rowId;
                $entityList[$rowId][] = [
                    self::ID => $rowData[self::ID],
                    self::NAME => $rowData[self::NAME],
                    self::ID_PROFILER => $rowData[self::ID_PROFILER],
                    self::FILE_PREFIX => $rowData[self::FILE_PREFIX],
                    self::DELIMITER => $rowData[self::DELIMITER],
                    self::DATA_SOURCE => $rowData[self::DATA_SOURCE],
                    self::ENABLE_DISABLE => $rowData[self::ENABLE_DISABLE],
                    self::FORMAT => $rowData[self::FORMAT],
                    self::HOSTNAME => $rowData[self::HOSTNAME],
                    self::USERNAME => $rowData[self::USERNAME],
                    self::PASSWORD => $rowData[self::PASSWORD],
                    self::TYPE => $rowData[self::TYPE],
                    self::PORT => $rowData[self::PORT],
                    self::LOCALFOLDER => $rowData[self::LOCALFOLDER],
                    self::DONE => $rowData[self::DONE],
                    self::FOLDERFTP => $rowData[self::FOLDERFTP],
                    self::DONEFOLDERFTP => $rowData[self::DONEFOLDERFTP],
                    self::LOCALFOLDERFTP => $rowData[self::LOCALFOLDERFTP],
                    self::CODE => $rowData[self::CODE],
                    self::SCHEDULE => $rowData[self::SCHEDULE],
                    self::MAPING => $rowData[self::MAPING],
                    self::ENABLELOCAL => $rowData[self::ENABLELOCAL],
                    self::ENABLEFTP => $rowData[self::ENABLEFTP],
                    self::IMPORT_EXPORT => $rowData[self::IMPORT_EXPORT],
                    self::OUTPUTFORMAT => $rowData[self::OUTPUTFORMAT],
                ];
            }
            if (\Magento\ImportExport\Model\Import::BEHAVIOR_REPLACE == $behavior) {
                if ($ids) {
                    if ($this->deleteEntityFinish(array_unique(  $ids), self::TABLE_ENTITY)) {
                        $this->saveEntityFinish($entityList, self::TABLE_ENTITY);
                    }
                }
            } elseif (\Magento\ImportExport\Model\Import::BEHAVIOR_APPEND == $behavior) {
                $this->saveEntityFinish($entityList, self::TABLE_ENTITY);
            }
        }
        return $this;
    }

    /**
     * Save question
     *
     * @param array $priceData
     * @param string $table
     * @return $this
     */
    protected function saveEntityFinish(array $entityData, $table) {
        if ($entityData) {
            $tableName = $this->_connection->getTableName($table);
            $entityIn = [];
            foreach ($entityData as $id => $entityRows) {
                    foreach ($entityRows as $row) {
                        $entityIn[] = $row;
                    }
            }
            if ($entityIn) {
                $this->_connection->insertOnDuplicate($tableName, $entityIn,[
                self::ID,
                self::NAME,
                self::ID_PROFILER,
                self::FILE_PREFIX,
                self::DELIMITER,
                self::DATA_SOURCE,
                self::ENABLE_DISABLE,
                self::FORMAT,
                self::HOSTNAME,
                self::USERNAME,
                self::PASSWORD,
                self::TYPE,
                self::PORT,
                self::LOCALFOLDER,
                self::DONE,
                self::FOLDERFTP,
                self::DONEFOLDERFTP,
                self::LOCALFOLDERFTP,
                self::CODE,
                self::SCHEDULE,
                self::MAPING,
                self::ENABLELOCAL,
                self::ENABLEFTP,
                self::IMPORT_EXPORT,
                self::OUTPUTFORMAT
            ]);
            }
        }
        return $this;
    }

    protected function deleteEntityFinish(array $ids, $table) {

        if ($table && $ids) {
            try {
                $this->countItemsDeleted += $this->_connection->delete(
                    $this->_connection->getTableName($table),
                    $this->_connection->quoteInto('id IN (?)', $ids)
                );
                return true;
            } catch (\Exception $e) {
                return false;
            }
        } else {
            return false;
        }
    }
}

RowValidatorInterface.pjp

    <?php
namespace ...\Profilers\Model\ImportExport\CustomImport;

interface RowValidatorInterface extends \Magento\Framework\Validator\ValidatorInterface
{
    const ERROR_INVALID_TITLE = 'InvalidValueTITLE';
    const ERROR_ID_IS_EMPTY = 'Empty';

    /**
     * Initialize validator
     *
     * @return $this
     */
    public function init($context);
}

My etc

    <?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_ImportExport:etc/import.xsd">
    <entity name="profilers" label="Import Profilers" model="...\Profilers\Model\ImportExport\Import" behaviorModel="Magento\ImportExport\Model\Source\Import\Behavior\Basic" />
</config>

Error