[PrestaShopException]

Link to database cannot be established: SQLSTATE[HY000] [2002] Connection refused
at line 119 in file classes/db/DbPDO.php

114.     public function connect()
115.     {
116.         try {
117.             $this->link = $this->getPDO($this->server, $this->user, $this->password, $this->database, 5);
118.         } catch (PDOException $e) {
119.             throw new PrestaShopException('Link to database cannot be established: ' . $e->getMessage());
120.         }
121. 
122.         $this->link->exec('SET SESSION sql_mode = \'\'');
123. 
124.         return $this->link;

• DbPDOCore->connect - [line 380 - classes/db/Db.php]

  375.         }
  376. 
  377.         $this->result = $this->_query($sql);
  378. 
  379.         if (!$this->result && $this->getNumberError() == 2006) {
  380.             $this->connect();
  381.             $this->result = $this->_query($sql);
  382.         }
  383. 
  384.         if (_PS_DEBUG_SQL_) {
  385.             $this->displayError($sql);
  

• DbCore->query - [line 660 - classes/db/Db.php] - [1 Arguments]

  655. 
  656.                 return $result;
  657.             }
  658.         }
  659. 
  660.         $this->result = $this->query($sql);
  661.         if (!$this->result) {
  662.             $result = false;
  663.         } else {
  664.             $result = $this->nextRow($this->result);
  665.         }
  

  Argument [0]
  SELECT `id_module` FROM `ps_4ftPiMT1_module` WHERE `name` = "ps_categorytree" LIMIT 1
  

• DbCore->getRow - [line 694 - classes/db/Db.php] - [2 Arguments]

  689.     {
  690.         if ($sql instanceof DbQuery) {
  691.             $sql = $sql->build();
  692.         }
  693. 
  694.         $result = $this->getRow($sql, $use_cache);
  695.         if (false === $result) {
  696.             return false;
  697.         }
  698. 
  699.         return array_shift($result);
  

  Argument [0]
  SELECT `id_module` FROM `ps_4ftPiMT1_module` WHERE `name` = "ps_categorytree" LIMIT 1
  Argument [1]
  1
  

• DbCore->getValue - [line 2633 - classes/module/Module.php] - [1 Arguments]

  2628.      */
  2629.     public static function getModuleIdByName($name)
  2630.     {
  2631.         $cache_id = 'Module::getModuleIdByName_' . pSQL($name);
  2632.         if (!Cache::isStored($cache_id)) {
  2633.             $result = (int) Db::getInstance()->getValue('SELECT `id_module` FROM `' . _DB_PREFIX_ . 'module` WHERE `name` = "' . pSQL($name) . '"');
  2634.             Cache::store($cache_id, $result);
  2635. 
  2636.             return $result;
  2637.         }
  2638. 
  

  Argument [0]
  SELECT `id_module` FROM `ps_4ftPiMT1_module` WHERE `name` = "ps_categorytree"
  

• ModuleCore::getModuleIdByName - [line 2105 - classes/module/Module.php] - [1 Arguments]

  2100. 
  2101.     public static function isEnabled($module_name)
  2102.     {
  2103.         if (!Cache::isStored('Module::isEnabled' . $module_name)) {
  2104.             $active = false;
  2105.             $id_module = Module::getModuleIdByName($module_name);
  2106.             if (Db::getInstance()->getValue('SELECT `id_module` FROM `' . _DB_PREFIX_ . 'module_shop` WHERE `id_module` = ' . (int) $id_module . ' AND `id_shop` = ' . (int) Context::getContext()->shop->id)) {
  2107.                 $active = true;
  2108.             }
  2109.             Cache::store('Module::isEnabled' . $module_name, (bool) $active);
  2110. 
  

  Argument [0]
  ps_categorytree
  

• ModuleCore::isEnabled - [line 999 - classes/Hook.php] - [1 Arguments]

  994.     }
  995. 
  996.     public static function coreRenderWidget($module, $hook_name, $params)
  997.     {
  998.         $context = Context::getContext();
  999.         if (!Module::isEnabled($module->name) || $context->isMobile() && !Module::isEnabledForMobileDevices($module->name)) {
  1000.             return null;
  1001.         }
  1002. 
  1003.         try {
  1004.             return $module->renderWidget($hook_name, $params);
  

  Argument [0]
  ps_categorytree
  

• HookCore::coreRenderWidget - [line 948 - classes/Hook.php] - [3 Arguments]

  943.                 if ($moduleInstance instanceof WidgetInterface) {
  944.                     if (0 !== $key && true === $chain) {
  945.                         $hook_args = $output;
  946.                     }
  947. 
  948.                     $display = Hook::coreRenderWidget($moduleInstance, $registeredHookName, $hook_args);
  949. 
  950.                     if ($array_return) {
  951.                         $output[$moduleInstance->name] = $display;
  952.                     } else {
  953.                         if (true === $chain) {
  

  Argument [0]