Update auth.service.ts

src/modules/auth/auth.service.ts

@@ -44,7 +44,16 @@ export class AuthService {
 
   async createAuthorizationRedirect(returnTo?: string) {
     const client = await this.getClient();
-    const redirectUri = this.config.get<string>('AUTH_CALLBACK_URL') || `${this.config.get('APP_URL') || ''}/auth/callback`;
+    const redirectUri =
+      this.config.get<string>('AUTHENTIK_REDIRECT_URI') ??
+      this.config.get<string>('AUTH_CALLBACK_URL') ??
+      `${this.config.get<string>('APP_URL')}/auth/callback`;
+
+    if (!redirectUri) {
+      throw new Error(
+        'No redirect URI configured. Set AUTHENTIK_REDIRECT_URI or AUTH_CALLBACK_URL.',
+      );
+    }
     
     const state = require('crypto').randomUUID();
     const code_verifier = generators.codeVerifier();