TypeError: Failed to fetch. Does the server allow CORS?status: undefined

i am using firebase as my backend. in DATA CONFIGURATOR i have enabled all the methods and they all wonking correctly. But in update(put) method it is giving error

Error: Type Error: Failed to fetch. Does the server allow CORS? status: undefined

what does it means?

Did you get this resolved?

Did you solve it, Mr.Manish_Patel

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