diff --git a/frontend/fetch-openapi.js b/frontend/fetch-openapi.js
index c894efa..ed0002a 100644
--- a/frontend/fetch-openapi.js
+++ b/frontend/fetch-openapi.js
@@ -4,12 +4,24 @@ import { exec } from 'child_process';
 import chokidar from 'chokidar';
 import path from 'path';
 import util from 'util';
+import dotenv from 'dotenv';
+
+if (!process.env.ENVIRONMENT) {
+    console.error("❌ Missing ENVIRONMENT variable.");
+    process.exit(1);
+}
+dotenv.config();
 
 // Determine the environment
-const environment = process.env.NODE_ENV || 'dev';
-const configFile = `config_${environment}.json`;
+const environment = process.env.ENVIRONMENT || 'dev';
+const nodeEnv = process.env.NODE_ENV || 'dev';
+const configFile = `config_${nodeEnv}.json`;
 
 // Load the appropriate configuration
+if (!configFile) {
+    console.error("❌ Configuration file path is missing.");
+    process.exit(1);
+}
 let config;
 try {
     config = JSON.parse(fs.readFileSync(path.resolve('../', configFile), 'utf8'));
@@ -18,6 +30,10 @@ try {
     process.exit(1);
 }
 
+if (!config.OPENAPI_URL || !config.SCHEMA_PATH || !config.OUTPUT_DIRECTORY || !config.SSL_KEY_PATH || !config.SSL_CERT_PATH) {
+    console.error("❌ Missing essential configuration values.");
+    process.exit(1);
+}
 const OPENAPI_URL = config.OPENAPI_URL;
 const SCHEMA_PATH = path.resolve(config.SCHEMA_PATH);
 const OUTPUT_DIRECTORY = path.resolve(config.OUTPUT_DIRECTORY);
@@ -111,10 +127,14 @@ async function fetchAndGenerate() {
 
 // Define backendDirectory based on ENVIRONMENT variable
 const ENVIRONMENT = process.env.ENVIRONMENT || 'dev';
-const backendDirectory = ENVIRONMENT === 'test'
+const backendDirectory = environment === 'test'
     ? path.resolve('/home/jungfrau/heidi-v2/backend/app')
     : path.resolve('/Users/gotthardg/PycharmProjects/heidi-v2/backend/app');
 
+if (!backendDirectory) {
+    console.error("❌ Failed to resolve backend directory path.");
+    process.exit(1);
+}
 console.log(`👀 Watching for changes in ${backendDirectory}`);
 
 const watcher = chokidar.watch(backendDirectory, { persistent: true, ignored: [SCHEMA_PATH, OUTPUT_DIRECTORY] });