import json

app/models/products.py

@@ -10,6 +10,7 @@ from datetime import timedelta
 import logging
 from sqlalchemy import and_, or_, not_
 from sqlalchemy.sql import func
+import json
 
 logger = logging.getLogger(__name__)
 
@@ -47,8 +48,10 @@ class Products(db.Model):
         # ).all()
         #
         product_list = cls.query.all()
+        json_output = json.dumps(product_list.to_dict())
+        print(json_output)
 
-        return product_list
+        return json_output
 
 
     def to_dict(self):