attempts to eliminate database connection errors

app/__init__.py

@@ -5,6 +5,7 @@ from flask_sqlalchemy import SQLAlchemy
 from flask_migrate import Migrate
 from flask_login import LoginManager
 
+
 db = SQLAlchemy()
 migrate = Migrate()
 login_manager = LoginManager()
@@ -12,8 +13,9 @@ login_manager = LoginManager()
 def create_app(config_class='config.Config'):
     app = Flask(__name__)
     app.config.from_object(config_class)
-
-    app.config['SQLALCHEMY_ENGINE_OPTIONS'] = config_class.SQLALCHEMY_ENGINE_OPTIONS
+    app.config['SQLALCHEMY_ENGINE_OPTIONS'] = {
+        "pool_pre_ping": True
+    }
 
     db.init_app(app)
     migrate.init_app(app, db)