diff --git a/Services/DetailPageProcessor.php b/Services/DetailPageProcessor.php
index 5ec1d69..a0b0004 100644
--- a/Services/DetailPageProcessor.php
+++ b/Services/DetailPageProcessor.php
@@ -135,7 +135,7 @@ private function query(): array
             );
             $arResult['type'] = 'article';
             $arResult['timePublished'] = $ob['TIMESTAMP_X'];
-            $arResult['url'] = $this->getFullUrl((string)$ob['DETAIL_PAGE_URL']) ?? '';
+            $arResult['url'] = $this->getFullUrl($ob['DETAIL_PAGE_URL']) ?? '';
 
             $idPicture = (int)$ob['PREVIEW_PICTURE'];
             if (!$idPicture) {
diff --git a/composer.json b/composer.json
index f52c8bc..6faa5d9 100644
--- a/composer.json
+++ b/composer.json
@@ -39,9 +39,7 @@
         "symfony/cache": "^4 || ^5"
     },
     "require-dev": {
-        "proklung/bitrix-phpunit-testing-tools": "^1.0",
-        "proklung/phpunit-testing-tools": "^1.0",
-        "symfony/framework-bundle": "^3.4 || ^4.0 || ^5.0"
+        "proklung/bitrix-phpunit-testing-tools": "^1.0"
     },
     "extra": {
         "installer-paths": {
diff --git a/psalm.xml b/psalm.xml
new file mode 100644
index 0000000..f120cbe
--- /dev/null
+++ b/psalm.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="3"
+    resolveFromConfigFile="true"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+    allowStringToStandInForClass="true"
+    allowCoercionFromStringToClassConst="true"
+    findUnusedPsalmSuppress="true"
+    skipChecksOnUnresolvableIncludes="true"
+>
+    <plugins>
+        <pluginClass class="Psalm\SymfonyPsalmPlugin\Plugin"/>
+        <pluginClass class="Psalm\MockeryPlugin\Plugin"/>
+    </plugins>
+    <projectFiles>
+        <directory name="/"/>
+        <ignoreFiles>
+            <directory name="vendor"/>
+            <directory name="Tests"/>
+            <file name="DependencyInjection/Configuration.php"/>
+        </ignoreFiles>
+    </projectFiles>
+    <extraFiles>
+        <directory name="vendor/sheerockoff/bitrix-ci/files/bitrix/modules/iblock"/>
+        <directory name="vendor/sheerockoff/bitrix-ci/files/bitrix/modules/main"/>
+    </extraFiles>
+    <issueHandlers>
+        <InvalidCatch>
+            <errorLevel type="suppress">
+                <referencedClass name="Psr\SimpleCache\InvalidArgumentException"/>
+                <referencedClass name="Psr\Cache\InvalidArgumentException"/>
+            </errorLevel>
+        </InvalidCatch>
+        <InvalidThrow>
+            <errorLevel type="suppress">
+                <referencedClass name="Psr\SimpleCache\InvalidArgumentException"/>
+                <referencedClass name="Psr\Cache\InvalidArgumentException"/>
+            </errorLevel>
+        </InvalidThrow>
+        <UnusedVariable>
+            <errorLevel type="suppress">
+                <directory name="/"/>
+            </errorLevel>
+        </UnusedVariable>
+        <UndefinedConstant>
+            <errorLevel type="suppress">
+                <directory name="/"/>
+            </errorLevel>
+        </UndefinedConstant>
+        <PropertyNotSetInConstructor>
+            <errorLevel type="suppress">
+                <directory name="/"/>
+            </errorLevel>
+        </PropertyNotSetInConstructor>
+        <ImplicitToStringCast>
+            <errorLevel type="suppress">
+                <directory name="/"/>
+            </errorLevel>
+        </ImplicitToStringCast>
+        <LessSpecificReturnStatement>
+            <errorLevel type="suppress">
+                <directory name="/"/>
+            </errorLevel>
+        </LessSpecificReturnStatement>
+        <MoreSpecificReturnType>
+            <errorLevel type="suppress">
+                <directory name="/"/>
+            </errorLevel>
+        </MoreSpecificReturnType>
+        <PossiblyInvalidMethodCall>
+            <errorLevel type="suppress">
+                <file name="Services/DetailPageProcessor.php"/>
+            </errorLevel>
+        </PossiblyInvalidMethodCall>
+    </issueHandlers>
+</psalm>