diff --git a/composer.lock b/composer.lock
index 1d5411b..cce0898 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,25 +1,24 @@
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@@ -41,40 +40,37 @@
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@@ -278,39 +276,38 @@
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@@ -332,44 +329,45 @@
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@@ -380,44 +378,49 @@
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-                "php": "^5.3.3 || ^7.0"
+                "php": "^7.2 || ^8.0",
+                "symfony/polyfill-ctype": "^1.8"
+            },
+            "conflict": {
+                "phpstan/phpstan": "<0.12.20",
+                "vimeo/psalm": "<4.6.1 || 4.6.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.6",
-                "sebastian/version": "^1.0.1"
+                "phpunit/phpunit": "^8.5.13"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.3-dev"
+                    "dev-master": "1.10-dev"
                 }
             },
             "autoload": {
@@ -1534,14 +1812,21 @@
                 "check",
                 "validate"
             ],
-            "time": "2018-01-29 19:49:41"
+            "support": {
+                "issues": "https://github.com/webmozarts/assert/issues",
+                "source": "https://github.com/webmozarts/assert/tree/1.10.0"
+            },
+            "time": "2021-03-09T10:59:23+00:00"
         }
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "bsr/utils": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.1.0"
 }
diff --git a/src/Webservice/Help.php b/src/Webservice/Help.php
index e2bb7ae..0466502 100644
--- a/src/Webservice/Help.php
+++ b/src/Webservice/Help.php
@@ -1,6 +1,7 @@
 <?php
 namespace Bsr\Webservice;
 
+use Bsr\Webservice\Exception\BugException;
 use Bsr\Webservice\Exception\WebException;
 use Bsr\Webservice\Formatter\Html;
 
@@ -16,7 +17,7 @@ class Help
      * @param mixed $ws
      * @param sting $func the function to be presented
      */
-    private static function func($ws, $func)
+    private static function func($ws, string $func)
     {
         try {
             $rm = new \ReflectionMethod($ws, $func);
diff --git a/src/Webservice/WebService.php b/src/Webservice/WebService.php
index 90cf187..493be5a 100644
--- a/src/Webservice/WebService.php
+++ b/src/Webservice/WebService.php
@@ -32,7 +32,7 @@ abstract class WebService
         Logger::start(array('version' => $this->version));
 
         $rendererClass = Configuration::get('renderer.class', __NAMESPACE__ . '\Renderer');
-        $renderer = new  $rendererClass;
+        $renderer = new $rendererClass;
 
         $data = array();
 
@@ -51,7 +51,9 @@ abstract class WebService
             $data["error"]["reason"] = $e->getMessage();
             $data["error"]["name"] = $e->getName();
 
-            $data['extra'] = Help::exception($e, $this, $this->func);
+            if ($this->func !== null) {
+                $data['extra'] = Help::exception($e, $this, $this->func);
+            }
 
             $this->status = 400;