orders.order_buy_market - Failing - but orders.order_buy_limit is working.

[nur-cde]

Hi - When executing buy for equity, in my python script when i use orders.order_buy_limit - this is placing order successfully. but when i use orders.order_buy_market - getting the below error.. have tried upgrading robin_stocks .. but no success still.. Would appreciate any help on this one..

Error :

Order Response: {
"non_field_errors": [
"Your app version is missing important stock trading updates. You can still place orders on the web."
]
}