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Hi folks, it seems to me the upgrade in the prefect UI has introduced a bug - specifically when it comes to trying to Run a flow with parameters from the UI. I.e. it seems that inputting parameter values is no longer possible.

I get the following error in the corresponding flow run
```{'type': ['Missing data for required field.']}```

however when I pass the parameters programmatically to client.create_flow_run - I don’t face this error

Hmm, also seen at <https://prefect-community.slack.com/archives/CL09KU1K7/p1613157557245500> -- cc <@UN6FTLFAS>

Hi <@U0141PE1A84> - are you able to give any more information about how you're running your flow and what parameters you're using?  It would be useful to know if you're adding parameters through the UI and if so how (JSON, the run page, the flow group settings?).  If you're able to give an example that would be useful too!  I'll create a ticket so you can add there or here if easier.  <@ULVA73B9P> open "BUG: Type - missing data for required field" in UI

<https://github.com/PrefectHQ/ui/issues/608>

Sure it is a flow with a single parameter `max_leases` which is an integer

Screen Shot 2021-02-12 at 6.09.37 PM.png

it is through the run tab - please see the accompanying screenshot

this should be the equivalent programmatically
```client = prefect.Client()
client.create_flow_run(flow_id=flow_id, parameters={"max_leases": 1})```

Thanks! We're having a hard time reproducing this but we're investigating

would it help if I share the flow/flow run id ?

It's EOD here so people are signing off but the flow run id can't hurt.

yes of course - it is understandable (no rush from my end) - here is the flow run id `03ca38c7-6f81-4586-aae1-68a5745fa15b`

Hey Marwan - one more question: what version of Prefect Core is your flow registered with? (It should be on the flow overview tile)

Hey <@U0141PE1A84> - we were able to identify the issue and release a fix, so next time you use the UI be sure to hard refresh and you should be good to go :+1:

Hi <@UKNSNMUE6> - thanks for the update, I just checked and it works now :slightly_smiling_face: