Load .env file manually because socketio.run does not load it for you.

opaque.py

 from app import create_app, db, socketio
 from app.models import Corpus, User, Role, Permission, Job
+from dotenv import load_dotenv
 from flask_migrate import Migrate
 import os
 
+
+load_dotenv()
+
+
 app = create_app(os.getenv('FLASK_CONFIG') or 'default')
 migrate = Migrate(app, db)