Gravity form after submission import csv

function csvToArray($csvFile){
    $file_to_read = fopen($csvFile, 'r');
    while (!feof($file_to_read) ) {
        $lines[] = fgetcsv($file_to_read, 1000, ',');
    }
    fclose($file_to_read);
    return $lines;
}
 add_action( 'gform_after_submission_8', 'csv_import_gravity', 10, 2 );
function csv_import_gravity($entry, $form){
$csv = array();
$upload_path = GFFormsModel::get_upload_path( $entry[ 'form_id' ] );
$upload_url = GFFormsModel::get_upload_url( $entry[ 'form_id' ] );
$filename = str_replace( $upload_url, $upload_path, $entry[ '1' ] );
 $csvFile = $filename;
$csv = csvToArray($csvFile);
 for($i=1; $i<count($csv); $i++) {
  $count_col = @count($csv[$i]);
  if($count_col!=18 || empty($csv[$i][0])){
    echo '<script>alert("Error in CSV format, please check and verify CSV file");</script><style>.erro-csv{display:block!important;}.success-csv{display:none;}</style>';
    $error = true;
    break ;
    }else{
   $post_data = array(
            'post_title' => 'CSV',
            'post_content' => 'Manual Entry',
            'post_type' => 'POST',
      'post_status'   => 'publish',
        );
        $post_id = wp_insert_post( $post_data );
     $post_ids[] = $post_id;
  $grower_name = $csv[$i][0];
  $lot_number = $csv[$i][1];
  $inventory = $csv[$i][2];
  $seed_class = $csv[$i][3];
  $grown_in = $csv[$i][4];
  $crop_year = $csv[$i][5];
  $variety = $csv[$i][6];
  $cwt_amount = $csv[$i][7];
  $tested_by = $csv[$i][8];
  $lab_number  = $csv[$i][9];
  $certifying_agency = $csv[$i][10];
  $certification_number = $csv[$i][11];
  $interagency_states = $csv[$i][12];
  $tag_grade = $csv[$i][13];
  $is_experimental  = $csv[$i][14];
  $eligible_pending_winter_test = $csv[$i][15];
  $size_specification  = $csv[$i][16];
  $plant_variety_protection = $csv[$i][17];
  if(!is_wp_error($post_id)){
   $user = get_user_by('login',$grower_name);
   if($user){
    update_field('grower_name', $user->ID, $post_id);
   }
   update_field('lot_number', $lot_number, $post_id);
   update_field('inventory', $inventory, $post_id);
   update_field('seed_class', $seed_class, $post_id);
   update_field('grown_in', $grown_in, $post_id);
   update_field('crop_year', $crop_year, $post_id);
   update_field('variety', $variety, $post_id);
   update_field('amount_of_cwt_units_in_lot', $cwt_amount, $post_id);
   update_field('tested_by_lab', $tested_by, $post_id);
   update_field('lab_number', $lab_number, $post_id);
   update_field('certifying_agency', $certifying_agency, $post_id);
   update_field('certification_number', $certification_number, $post_id);
   update_field('interagency_states', $interagency_states, $post_id);
   update_field('tag_grade', $tag_grade, $post_id);
   update_field('is_experimental', $is_experimental, $post_id);
   update_field('eligible_pending_winter_test', $eligible_pending_winter_test, $post_id);
   update_field('size_specification', $size_specification, $post_id);
   update_field('plant_variety_protection', $plant_variety_protection, $post_id);
   $title = 'CSV '.get_field('crop_year',$post_id).' - '.get_field('lot_number',$post_id);
   $content = array(
    'ID' => $post_id,
    'post_title' => $title
   );
   wp_update_post($content);
   }
  }
  }
     if($error==true){
  //echo '<script>console.log("Error ids'.implode(", ",$post_ids).'");</script>';
 }
}