Fixed #18, reference->'https://stackoverflow.com/a/67114549'

Author: mohamedmujtabaraza

backend/.env.example

@@ -2,4 +2,6 @@ DEBUG=True
 DATABASE_URL=sqlite:///files/data.db
 OPENCV_VIDEO_SOURCE=0
 SECRET_KEY=change-this-key
-JWT_SECRET_KEY=change-this-key-to-something-different
+JWT_SECRET_KEY=change-this-key-to-something-different
+# 2 MB max size upload (2 * 1024 * 1024)
+MAX_CONTENT_LENGTH=2097152

backend/src/app.py

@@ -2,7 +2,7 @@
 from flask_restful import Api
 from flask_jwt_extended import JWTManager
 from flask_cors import CORS
-from flask_uploads import configure_uploads, patch_request_class
+from flask_uploads import configure_uploads
 from marshmallow import ValidationError
 
 from src.libs.image_helper import IMAGE_SET
@@ -18,7 +18,6 @@
 app = Flask(__name__)
 app.config.from_object("src.settings.FlaskAppConfiguration")
 api = Api(app)
-patch_request_class(app, 2 * 1024 * 1024)  # 2 MB max size upload
 configure_uploads(app, IMAGE_SET)
 jwt = JWTManager(app)
 cors = CORS(app)