Issue #25: Check if Composer root path exist in Statistics and fix typo

Author: wallon-ines

src/Installer.php

@@ -370,7 +370,7 @@ public function createAssetSymlinks() {
   }
 
   /**
-   * Create a PHP stub file at we directory.
+   * Create a PHP stub file at web directory.
    *
    * @param string $path
    *   The PHP file from the app directory.
@@ -486,6 +486,10 @@ protected function getModulePath(string $module): ?string {
   protected function getStatisticsPath(): void {
     $composerRoot = $this->getComposerRoot();
     $fs = new SymfonyFilesystem();
+    if (!$fs->exists($composerRoot)) {
+      $this->io->writeError('Composer root path not found');
+      return;
+    }
     $statisticsPath = $this->getModulePath('statistics');
     $statisticsCorePath = 'core/modules/statistics/statistics.php';