Fix some incompatible requirements

requirements.txt

@@ -11,6 +11,7 @@ Flask-Hashids==1.0.1
 Flask-HTTPAuth
 Flask-Login
 Flask-Mail
+flask-marshmallow==0.14.0 
 Flask-Migrate
 Flask-Paranoid
 Flask-SocketIO
@@ -18,7 +19,7 @@ Flask-SQLAlchemy==2.5.1
 Flask-WTF
 hiredis
 MarkupSafe==2.0.1
-marshmallow-sqlalchemy
+marshmallow-sqlalchemy==0.29.0
 psycopg2
 PyJWT
 pyScss