diff --git a/composer.json b/composer.json
index 8ed24acf7..e1389abbc 100644
--- a/composer.json
+++ b/composer.json
@@ -53,9 +53,9 @@
       "webmozart/path-util": "^2.3"
    },
    "require-dev": {
-      "phpstan/phpstan": "1.5.7",
+      "phpstan/phpstan": "1.6.3",
       "phpstan/phpstan-phpunit": "^1.1.0",
-      "phpstan/phpstan-strict-rules": "^1.0.0",
+      "phpstan/phpstan-strict-rules": "^1.2.0",
       "phpunit/phpunit": "^9.2"
    },
    "autoload": {
diff --git a/composer.lock b/composer.lock
index 7f353a9bf..d04fc2d54 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "fa508967e1ffdb63b73de2c40c5b8f11",
+    "content-hash": "d5463f8f42873bcbbd373123eaa1f659",
     "packages": [
         {
             "name": "adhocore/json-comment",
@@ -1819,16 +1819,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.5.7",
+            "version": "1.6.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "7fb7e2e1e9f3d59a26a413b2d3d5e47f0edb75ac"
+                "reference": "6128620b98292e0b69ea6d799871d77163681c8e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/7fb7e2e1e9f3d59a26a413b2d3d5e47f0edb75ac",
-                "reference": "7fb7e2e1e9f3d59a26a413b2d3d5e47f0edb75ac",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/6128620b98292e0b69ea6d799871d77163681c8e",
+                "reference": "6128620b98292e0b69ea6d799871d77163681c8e",
                 "shasum": ""
             },
             "require": {
@@ -1854,7 +1854,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.5.7"
+                "source": "https://github.com/phpstan/phpstan/tree/1.6.3"
             },
             "funding": [
                 {
@@ -1874,7 +1874,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-04-20T12:20:27+00:00"
+            "time": "2022-04-28T11:27:53+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",
@@ -1930,21 +1930,21 @@
         },
         {
             "name": "phpstan/phpstan-strict-rules",
-            "version": "1.1.0",
+            "version": "1.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan-strict-rules.git",
-                "reference": "e12d55f74a8cca18c6e684c6450767e055ba7717"
+                "reference": "f3ca6464eae640a556c69a02b3b77a2507475d2f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan-strict-rules/zipball/e12d55f74a8cca18c6e684c6450767e055ba7717",
-                "reference": "e12d55f74a8cca18c6e684c6450767e055ba7717",
+                "url": "https://api.github.com/repos/phpstan/phpstan-strict-rules/zipball/f3ca6464eae640a556c69a02b3b77a2507475d2f",
+                "reference": "f3ca6464eae640a556c69a02b3b77a2507475d2f",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1 || ^8.0",
-                "phpstan/phpstan": "^1.2.0"
+                "php": "^7.2 || ^8.0",
+                "phpstan/phpstan": "^1.6.3"
             },
             "require-dev": {
                 "nikic/php-parser": "^4.13.0",
@@ -1954,9 +1954,6 @@
             },
             "type": "phpstan-extension",
             "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0-dev"
-                },
                 "phpstan": {
                     "includes": [
                         "rules.neon"
@@ -1975,9 +1972,9 @@
             "description": "Extra strict and opinionated rules for PHPStan",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan-strict-rules/issues",
-                "source": "https://github.com/phpstan/phpstan-strict-rules/tree/1.1.0"
+                "source": "https://github.com/phpstan/phpstan-strict-rules/tree/1.2.1"
             },
-            "time": "2021-11-18T09:30:29+00:00"
+            "time": "2022-04-28T07:20:18+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
diff --git a/src/network/upnp/UPnP.php b/src/network/upnp/UPnP.php
index 1c14cead8..f00b70ef6 100644
--- a/src/network/upnp/UPnP.php
+++ b/src/network/upnp/UPnP.php
@@ -174,7 +174,7 @@ class UPnP{
 			'/upnp:controlURL'
 		), "xpath query is borked");
 
-		if(count($xpathResult) === 0){
+		if($xpathResult === null || count($xpathResult) === 0){
 			throw new UPnPException("Your router does not support portforwarding");
 		}
 		$controlURL = (string) $xpathResult[0];