@@ -347,6 +347,9 @@ public function availableLanguages()
     {
         $languages = [];
         foreach (Script::scriptFormats() as $key => $config) {
+            if (in_array($key, Script::deprecatedLanguages)) {
+                continue;
+            }
             if (!array_key_exists('system', $config) || (array_key_exists('system', $config) && !$config['system'])) {
                 $languages[] = [
                     'value' => $key,
 
@@ -73,6 +73,8 @@ class Script extends ProcessMakerModel implements ScriptInterface
 
     const categoryClass = ScriptCategory::class;
 
+    const deprecatedLanguages = ['lua', 'r'];
+
     protected $connection = 'processmaker';
 
     protected $guarded = [
 
@@ -59,6 +59,13 @@ class ScriptExecutor extends ProcessMakerModel
         'title', 'description', 'language', 'config', 'is_system',
     ];
 
+    // Lua and R are deprecated. This scope can be removed
+    // when they are removed permanently.
+    public function scopeActive($query)
+    {
+        return $query->whereNotIn('language', Script::deprecatedLanguages);
+    }
+
     public static function install($params)
     {
         $language = $params['language'];
@@ -153,7 +160,7 @@ public static function list($language = null, $forEditMode = false)
     {
         $list = [];
         $executors =
-            self::where('is_system', false)->orderBy('language', 'asc')
+            self::active()->where('is_system', false)->orderBy('language', 'asc')
             ->orderBy('created_at', 'asc');
 
         if ($language) {