diff --git a/pandora_console/include/ajax/update_manager.ajax.php b/pandora_console/include/ajax/update_manager.ajax.php
index 023766a99e..36034fefa4 100644
--- a/pandora_console/include/ajax/update_manager.ajax.php
+++ b/pandora_console/include/ajax/update_manager.ajax.php
@@ -272,6 +272,12 @@ if ($install_package) {
             "Update version: $version of ".$product_name.' by '.$config['id_user']
         );
 
+        // An update have been applied, clean phantomjs cache.
+        config_update_value(
+            'clean_phantomjs_cache',
+            1
+        );
+
         $return['status'] = 'success';
         echo json_encode($return);
         return;
diff --git a/pandora_console/include/chart_generator.php b/pandora_console/include/chart_generator.php
index 3ed8e294db..eb67a326e6 100644
--- a/pandora_console/include/chart_generator.php
+++ b/pandora_console/include/chart_generator.php
@@ -41,6 +41,17 @@ require_once $config['homedir'].'/include/functions_modules.php';
 require_once $config['homedir'].'/include/functions_agents.php';
 require_once $config['homedir'].'/include/functions_tags.php';
 
+$data_raw = get_parameter('data');
+$data_decoded = json_decode(base64_decode($data_raw), true);
+if (json_last_error() === JSON_ERROR_NONE) {
+    $data = urldecode($data_decoded['data']);
+    $session_id = urldecode($data_decoded['session_id']);
+    $data_combined = urldecode($data_decoded['data_combined']);
+    $data_module_list = urldecode($data_decoded['data_module_list']);
+    $type_graph_pdf = urldecode($data_decoded['type_graph_pdf']);
+    $viewport_width = urldecode($data_decoded['viewport_width']);
+}
+
 
 /**
  * Echo to stdout a PhantomJS callback call.
@@ -69,7 +80,7 @@ function echoPhantomCallback()
 global $config;
 
 // Try to initialize session using existing php session id.
-$user = new PandoraFMS\User(['phpsessionid' => $_REQUEST['session_id']]);
+$user = new PandoraFMS\User(['phpsessionid' => $session_id]);
 if (check_login(false) === false) {
     // Error handler.
     ?>
@@ -97,12 +108,12 @@ if (check_login(false) === false) {
 }
 
 // Access granted.
-$params = json_decode($_REQUEST['data'], true);
+$params = json_decode($data, true);
 
 // Metaconsole connection to the node.
 $server_id = $params['server_id'];
 
-if (is_metaconsole() && !empty($server_id)) {
+if (is_metaconsole() === true && empty($server_id) === false) {
     $server = metaconsole_get_connection_by_id($server_id);
     // Error connecting.
     if (metaconsole_connect($server) !== NOERR) {
@@ -165,12 +176,12 @@ if (file_exists('languages/'.$user_language.'.mo') === true) {
     $params['only_image'] = false;
     $params['menu'] = false;
 
-    $params_combined = json_decode($_REQUEST['data_combined'], true);
-    $module_list = json_decode($_REQUEST['data_module_list'], true);
-    $type_graph_pdf = $_REQUEST['type_graph_pdf'];
+    $params_combined = json_decode($data_combined, true);
+    $module_list = json_decode($data_module_list, true);
+    $type_graph_pdf = $type_graph_pdf;
 
     if (isset($params['vconsole']) === false || $params['vconsole'] === false) {
-        $params['width'] = (int) $_REQUEST['viewport_width'];
+        $params['width'] = (int) $viewport_width;
         if ((isset($params['width']) === false
             || ($params['width'] <= 0))
         ) {
diff --git a/pandora_console/include/class/ConsoleSupervisor.php b/pandora_console/include/class/ConsoleSupervisor.php
index 5caad6f9e8..473a5d3be5 100644
--- a/pandora_console/include/class/ConsoleSupervisor.php
+++ b/pandora_console/include/class/ConsoleSupervisor.php
@@ -107,13 +107,13 @@ class ConsoleSupervisor
         $this->verbose = $verbose;
 
         if ($source === false) {
-            $this->enabled = false;
+            $this->notificationsEnabled = false;
             $this->sourceId = null;
 
             $this->targetGroups = null;
             $this->targetUsers = null;
         } else {
-            $this->enabled = (bool) $source['enabled'];
+            $this->notificationsEnabled = (bool) $source['enabled'];
             $this->sourceId = $source['id'];
 
             // Assign targets.
@@ -251,8 +251,10 @@ class ConsoleSupervisor
     {
         global $config;
 
-        if ($this->enabled === false) {
-            // Feature not enabled.
+        $this->maintenanceOperations();
+
+        if ($this->notificationsEnabled === false) {
+            // Notifications not enabled.
             return;
         }
 
@@ -490,6 +492,21 @@ class ConsoleSupervisor
     }
 
 
+    /**
+     * Executes console maintenance operations. Executed ALWAYS through CRON.
+     *
+     * @return void
+     */
+    public function maintenanceOperations()
+    {
+        /*
+         * Process cache clean if needed.
+         */
+
+        $this->checkCleanPhantomCache();
+    }
+
+
     /**
      * Update targets for given notification using object targets.
      *
@@ -2597,4 +2614,30 @@ class ConsoleSupervisor
     }
 
 
+    /**
+     * Clean Phantom cache if needed.
+     *
+     * @return void
+     */
+    public function checkCleanPhantomCache()
+    {
+        global $config;
+
+        if ((int) $config['clean_phantomjs_cache'] !== 1) {
+            return;
+        }
+
+        $cache_dir = $config['homedir'].'/attachment/cache';
+        if (is_dir($cache_dir) === true) {
+            rrmdir($cache_dir);
+        }
+
+        // Clean process has ended.
+        config_update_value(
+            'clean_phantomjs_cache',
+            0
+        );
+    }
+
+
 }
diff --git a/pandora_console/include/functions.php b/pandora_console/include/functions.php
index 49de19a9ee..0147168ebf 100644
--- a/pandora_console/include/functions.php
+++ b/pandora_console/include/functions.php
@@ -3973,8 +3973,22 @@ function series_type_graph_array($data, $show_elements_graph)
 }
 
 
-function generator_chart_to_pdf($type_graph_pdf, $params, $params_combined=false, $module_list=false)
-{
+/**
+ * Draw chart pdf.
+ *
+ * @param string  $type_graph_pdf  Type graph.
+ * @param array   $params          Params.
+ * @param boolean $params_combined Params only charts combined.
+ * @param boolean $module_list     Array modules.
+ *
+ * @return string Img or base64.
+ */
+function generator_chart_to_pdf(
+    $type_graph_pdf,
+    $params,
+    $params_combined=false,
+    $module_list=false
+) {
     global $config;
 
     if (is_metaconsole()) {
@@ -4016,8 +4030,18 @@ function generator_chart_to_pdf($type_graph_pdf, $params, $params_combined=false
     }
 
     $session_id = session_id();
+    $cache_dir = $config['homedir'].'/attachment/cache';
 
-    $cmd = '"'.io_safe_output($config['phantomjs_bin']).DIRECTORY_SEPARATOR.'phantomjs" --ssl-protocol=any --ignore-ssl-errors=true "'.$file_js.'" '.' "'.$url.'"'.' "'.$type_graph_pdf.'"'.' "'.$params_encode_json.'"'.' "'.$params_combined.'"'.' "'.$module_list.'"'.' "'.$img_path.'"'.' "'.$width_img.'"'.' "'.$height_img.'"'.' "'.$session_id.'"'.' "'.$params['return_img_base_64'].'"';
+    $cmd = '"'.io_safe_output($config['phantomjs_bin']);
+    $cmd .= DIRECTORY_SEPARATOR.'phantomjs" ';
+    $cmd .= ' --disk-cache=true --disk-cache-path="'.$cache_dir.'"';
+    $cmd .= ' --max-disk-cache-size=10000 ';
+    $cmd .= ' --ssl-protocol=any --ignore-ssl-errors=true ';
+    $cmd .= '"'.$file_js.'" "'.$url.'" "'.$type_graph_pdf.'"';
+    $cmd .= ' "'.$params_encode_json.'" "'.$params_combined.'"';
+    $cmd .= ' "'.$module_list.'" "'.$img_path.'"';
+    $cmd .= ' "'.$width_img.'" "'.$height_img.'"';
+    $cmd .= ' "'.$session_id.'" "'.$params['return_img_base_64'].'"';
 
     $result = null;
     $retcode = null;
@@ -4029,7 +4053,7 @@ function generator_chart_to_pdf($type_graph_pdf, $params, $params_combined=false
         // To be used in alerts.
         return $img_content;
     } else {
-        // to be used in PDF files.
+        // To be used in PDF files.
         $config['temp_images'][] = $img_path;
         return '<img src="'.$img_url.'" />';
     }
diff --git a/pandora_console/include/functions_graph.php b/pandora_console/include/functions_graph.php
index 55ef41ef31..9a02ad1dbc 100644
--- a/pandora_console/include/functions_graph.php
+++ b/pandora_console/include/functions_graph.php
@@ -1349,7 +1349,7 @@ function graphic_combined_module(
         if ($count_modules > 0) {
             foreach ($module_list as $key => $value) {
                 $sources[$key]['id_server'] = (isset($value['id_server']) === true) ? $value['id_server'] : $params['server_id'];
-                $sources[$key]['id_agent_module'] = $value['module'];
+                $sources[$key]['id_agent_module'] = (isset($value['module']) === true) ? $value['module'] : $value;
                 $sources[$key]['weight'] = $weights[$key];
                 $sources[$key]['label'] = $params_combined['labels'];
             }
diff --git a/pandora_console/include/functions_update_manager.php b/pandora_console/include/functions_update_manager.php
index 77b6e5e432..2b3dcbc093 100755
--- a/pandora_console/include/functions_update_manager.php
+++ b/pandora_console/include/functions_update_manager.php
@@ -1753,6 +1753,12 @@ function update_manager_extract_package()
         return false;
     }
 
+    // An update have been applied, clean phantomjs cache.
+    config_update_value(
+        'clean_phantomjs_cache',
+        1
+    );
+
     db_process_sql_update(
         'tconfig',
         ['value' => 50],
diff --git a/pandora_console/include/web2image.js b/pandora_console/include/web2image.js
index b1fb421c7e..e7014d3f5b 100644
--- a/pandora_console/include/web2image.js
+++ b/pandora_console/include/web2image.js
@@ -27,27 +27,79 @@ if (!viewport_height) {
 }
 
 if (type_graph_pdf == "combined") {
-  post_data =
-    "data=" +
-    url_params +
-    "&data_combined=" +
-    url_params_comb +
-    "&data_module_list=" +
-    url_module_list +
-    "&type_graph_pdf=" +
-    type_graph_pdf +
-    "&session_id=" +
-    session_id;
+  post_data = {
+    data: url_params,
+    session_id: session_id,
+    type_graph_pdf: type_graph_pdf,
+    data_module_list: url_module_list,
+    data_combined: url_params_comb
+  };
 } else {
-  post_data =
-    "data=" +
-    url_params +
-    "&type_graph_pdf=" +
-    type_graph_pdf +
-    "&session_id=" +
-    session_id;
+  post_data = {
+    data: url_params,
+    session_id: session_id,
+    type_graph_pdf: type_graph_pdf
+  };
 }
 
+/* DEBUG
+page.onAlert = function() {
+  console.log("onAlert");
+};
+page.onCallback = function() {
+  console.log("onCallback");
+};
+page.onClosing = function() {
+  console.log("onClosing");
+};
+page.onConfirm = function() {
+  console.log("onConfirm");
+};
+page.onConsoleMessage = function() {
+  console.log("onConsoleMessage");
+};
+page.onError = function() {
+  console.log("onError");
+};
+page.onFilePicker = function() {
+  console.log("onFilePicker");
+};
+page.onInitialized = function() {
+  console.log("onInitialized");
+};
+page.onLoadFinished = function() {
+  console.log("onLoadFinished");
+};
+page.onLoadStarted = function() {
+  console.log("onLoadStarted");
+};
+page.onNavigationRequested = function() {
+  console.log("onNavigationRequested");
+};
+page.onPageCreated = function() {
+  console.log("onPageCreated");
+};
+page.onPrompt = function() {
+  console.log("onPrompt");
+};
+page.onResourceError = function() {
+  console.log("onResourceError");
+};
+page.onResourceReceived = function(res) {
+  console.log("onResourceReceived" + ";" + res.url + ";" + res.status);
+};
+page.onResourceRequested = function(res) {
+  console.log("onResourceRequested" + ";" + res.url);
+};
+page.onResourceTimeout = function() {
+  console.log("onResourceTimeout");
+};
+page.onUrlChanged = function(url) {
+  console.log("onUrlChanged" + ";" + url);
+};
+
+*/
+
 var page = require("webpage").create();
 
 page.onResourceError = function(resourceError) {
@@ -80,8 +132,15 @@ page.viewportSize = {
 
 page.zoomFactor = 1;
 
+page.settings.userAgent =
+  "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36";
+page.settings.resourceTimeout = 2000;
+page.settings.localToRemoteUrlAccessEnabled = true;
+
 page.onConsoleMessage = function(msg) {
   console.log(msg);
+  page.close();
+  phantom.exit();
 };
 
 page.onError = function(msg) {
@@ -102,7 +161,9 @@ page.onCallback = function() {
   phantom.exit();
 };
 
-page.open(url, "POST", post_data, function(status) {
+page.open(url, "POST", "data=" + btoa(JSON.stringify(post_data)), function(
+  status
+) {
   if (status == "fail") {
     console.out("Failed to generate chart.");
     phantom.exit();