diff --git a/src/Installer/VendorInstaller.php b/src/Installer/VendorInstaller.php
index 3f1fb3bc..ae41b57c 100644
--- a/src/Installer/VendorInstaller.php
+++ b/src/Installer/VendorInstaller.php
@@ -126,7 +126,7 @@ public function installNode(): void
             Process::fromShellCommandline($cmd, $this->moodle->directory, null, null, null)
         );
         if (!$process->isSuccessful()) {
-            throw new \RuntimeException('Node.js installation failed.');
+            throw new \RuntimeException('Node.js installation failed. Output: ' . $process->getOutput() . ' nvm dir: ' . (string) $nvmDir);
         }
         // Retrieve NVM_BIN from initialisation output, we will use it to
         // substitute right Node.js environment in all future process runs.