我写了一个Wordpress插件，它在我的本地网站上离线运行得很好，但当我把它投入生产时就不行了？安装效果很好，但激活按钮不起作用。。。是否有人知道如何解决此问题？

感谢您的回答！

更多信息可能，插件使用composer和PhpSpreadReader，我知道它需要一些特定的php库，我在OVH托管！也许服务器上没有安装库？

if (!defined(\'EXCELREADER_TEMPLATE_URL\'))
      define(\'EXCELREADER_TEMPLATE_URL\', dirname(FILE) . "/templates");

if (!defined(\'EXCELREADER_URL\'))
      define(\'EXCELREADER_URL\', plugin_dir_url(FILE));

if (!defined(\'EXCELREADER_COMPOSER_URL\'))
      define(\'EXCELREADER_COMPOSER_URL\', dirname(FILE) . "/vendor");

ini_set(\'max_execution_time\', 300);

include \'vendor/autoload.php\';
require \'includes/class-php-spread-reader.php\';
require \'includes/widget-excel-reader.php\';

add_action(\'plugins_loaded\', \'excelreader\');

add_filter(\'admin_init\', \'check_if_we_should_change_upload_dir\', 999);

//This goes inside Plugin A.
//When A is activated. activate B.
register_activation_hook(FILE, \'excelreader_activate\');
function excelreader_activate()
{
      $dependent = \'excelreader.php\';
      if (is_plugin_inactive($dependent)) {
            add_action(\'update_option_active_plugins\', \'my_activate_dependent_excelreader\');
      }
}

function my_activate_dependent_excelreader()
{
      $dependent = \'excelreader.php\';
      activate_plugin($dependent);
}

// Register and load the widget
function wpb_load_widget()
{
      register_widget(\'excelreader_widget\');
}

add_action(\'widgets_init\', \'wpb_load_widget\');

class ExcelReader
{
      /**
*
*   Chemin du dossier où sont sauvegarder les xlsx déja entrée
*
*/
      private $dirfxlxs;

  /**


*
*   Instance de la classe PhpSpreadReader
*
*/
      private $phpspread;

  protected static $instance;

  public static function get_instance()
  {
        if (!self::$instance) {
              self::$instance = new self();
        }
        return self::$instance;
  }


  /**


*
*   Constructeur
*
*/
      public function construct()
      {
            // Admin page calls:
            sql_install();
            add_action(\'admin_menu\', array(&$this, \'addAdminMenu\'));
            add_action(\'wp_ajax_store_admin_data\', array(&$this, \'storeAdminData\'));
            add_action(\'admin_enqueue_scripts\', array(&$this, \'addAdminScripts\'));
            register_activation_hook(__FILE, array(&$this, \'plugin_activate\'));
            //add_action( \'init\', array($this,\'load_translation\') );
      }

  public function plugin_activate()
  {
        if (version_compare(get_bloginfo(\'version\'), \'1.0\', \' < \')) {
              deactivate_plugins(basename(__FILE__));
        } else {
              $rlm_rsvplus_options = array(
                    \'db_version\'          => \'1.0\',
                    \'event_name\'          => \'\',
                    \'end_date\'            => \'\',
              );

              update_option(\'rlm_myplugin_options\', $rlm_myplugin_options);
        }
  }

  /**


*
*   Display the Plugin on admin menu panel
* @return void
*
**/
      public function addAdminMenu()
      {
            add_menu_page(
                  __(\'ExcelReader\', \'excelreader\'),
                  __(\'ExcelReader\', \'excelreader\'),
                  \'manage_options\',
                  \'excelreader\',
                  array($this, \'adminLayout\'),
                  \'\'
            );
      }

  /**


*  Outputs the Admin Dashboard layout containing the form with all its options
 *  Display on Admin Page
* @return void
*/

  public function adminLayout()
  {
        $this->display_enter_a_file();
        /*if(isset($this->phpspread))
           $this->phpspread->display_excelfile();*/
        //  $this->display_wc_categories();
  }

  /**


*
 *  Affichage du formulaire pour le fichier
*   @return void
**/

  public function display_enter_a_file()
  {


// SOME CODE HERE NOT IMPORTANT CAUSE ALL IS WORKING AT THIS LVL
}

/**
 *
 *  Date pour le fichier XLS Sauvegarde
*   @return string
**/

public function getDateAndTime()
{
      $now = new DateTime();
      return $now->getTimestamp();
}

/**
 *
 *  Sauvergarde du fichier dans wp-content/uploads
*   @return true
**/

public function upload_user_file(array $file)
{
      // Check that the nonce is valid, and the user can edit this post.
      if (
            isset($_POST[\'my_image_upload_nonce\'], $_POST[\'post_id\'])
            && wp_verify_nonce($_POST[\'my_image_upload_nonce\'], \'my_image_upload\')
      ) {
            // Let WordPress handle the upload.
            // Remember, \'my_image_upload\' is the name of our file input in our form above.
            $this->clean_folder();
            $attachment_id = media_handle_upload(\'my_image_upload\', $_POST[\'post_id\']);

        if (is_wp_error($attachment_id)) {
              // There was an error uploading the image.
              echo "Une erreur est survenu a l\'upload"; ?><br><?php

  } else {
        echo "Fichier Upload"; ?><br><?php
                    $this->phpspread = new PhpSpreadReader();
                    $this->phpspread->read_file_php_spread();
              }
        } else {
              echo "Probleme durant l\'upload ";
              ?><br><?php


// The security check failed, maybe show the user an error.
      }
}

/**
*
*   Nettoyer le répertoire du dossier wordpress
*   @return void
**/
                  public function clean_folder()
                  {
                        $files = glob(wp_upload_dir()[\'path\'] . "/*"); // get all file names
                        foreach ($files as $file) { // iterate files
                              if (is_file($file))
                                    unlink($file); // delete file
                        }
                  }

/**
 *
 * Appel des fonctions dans le panel admin
 * @return void
 **/
                  public function addAdminScripts()
                  { }
            }

        ExcelReader::get_instance();