Add "composer require..." in all exception messages when needed

Author: artyuum

Matcher/Dumper/CompiledUrlMatcherDumper.php

@@ -447,7 +447,7 @@ private function getExpressionLanguage(): ExpressionLanguage
     {
         if (!isset($this->expressionLanguage)) {
             if (!class_exists(ExpressionLanguage::class)) {
-                throw new \LogicException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
+                throw new \LogicException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed. Try running "composer require symfony/expression-language".');
             }
             $this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders);
         }

Matcher/UrlMatcher.php

@@ -259,7 +259,7 @@ protected function getExpressionLanguage()
     {
         if (null === $this->expressionLanguage) {
             if (!class_exists(ExpressionLanguage::class)) {
-                throw new \LogicException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
+                throw new \LogicException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed. Try running "composer require symfony/expression-language".');
             }
             $this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders);
         }

composer.json

@@ -33,12 +33,6 @@
         "symfony/dependency-injection": "<5.4",
         "symfony/yaml": "<5.4"
     },
-    "suggest": {
-        "symfony/http-foundation": "For using a Symfony Request object",
-        "symfony/config": "For using the all-in-one router or any loader",
-        "symfony/yaml": "For using the YAML loader",
-        "symfony/expression-language": "For using expression matching"
-    },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Routing\\": "" },
         "exclude-from-classmap": [