Fix

Author: yoanm

.github/workflows/reusable-CI-workflow.yml

@@ -83,7 +83,8 @@ jobs:
             php-version: '${{ needs.fetch-supported-versions.outputs.php-max }}'
             symfony-version: '${{ needs.fetch-supported-versions.outputs.symfony-min }}'
             # Fix - behat/gherkin => Avoid issue with behat <-> gherkin packages (See https://github.com/Behat/Gherkin/issues/317)
-            pkg-extra-constraints: --with 'behat/gherkin:~4.12.0'
+            # Fix - symfony/yaml => Avoid issue between symfony/yaml and symfony/framework-bundle (not compatible with some versions due to incomplete function signatures)
+            pkg-extra-constraints: --with 'behat/gherkin:~4.12.0' ${{ ( needs.fetch-supported-versions.outputs.symfony-min == '7.0' && needs.fetch-supported-versions.outputs.php-max == '8.4' ) && '--with "symfony/yaml:~7.0.0"' || '' }}
     steps:
       - name: Check out code
         uses: actions/checkout@v5

src/DependencyInjection/Configuration.php

@@ -8,7 +8,7 @@ class Configuration implements ConfigurationInterface
 {
     const DEFAULT_ENDPOINT = '/json-rpc';
 
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder(JsonRpcHttpServerExtension::EXTENSION_IDENTIFIER);