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Helper V
Helper V

Sudden appearance of 'The Function FIRST has some invalid arguments'

I haven't been into my app for a little while but jumped in today to make some enhancements. I was greeted with the 'Your app was upgraded to improved rendering' and clicked 'ok' as I didn't really have another choice. The main dashboard (Which previously had no formula errors) now shows several instances of:

 

The function FIRST has some invalid arguments. Has something changed in the FIRST function that would cause this? I cant find any information on this. See below screenshots. 

 

They are all the same error, just in different formulas. 

 

2019-10-31 15_06_21-Window.png2019-10-31 15_06_49-Heart In Hand - Saved (Unpublished) - PowerApps.png

 

In addition, when previewing the app, the dashboard displays no data pulled from the custom connector I'm using. I am hesitant to publish the app in this state.  Data is not showing for custom connector calls even for areas where there is no formula error showing up.

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Community Support
Community Support

Re: Sudden appearance of 'The Function FIRST has some invalid arguments'

Hi @JamesM ,

 

What is the error information under red wavy line?

What is the data source of your apps?

 

I don't think the error is due to the First function, possibly due to the connection failure with the data source.

Could you try to delete all data source connection, and re-add them to check if your issue is fixed?

Best regards,

Sik

 

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