I made A simple Request but getting AUTHENTICATION_REQUIRED error

[Aashi]

Hello, devs,

why am I getting this error again and again

{"error":{"type":"AUTHENTICATION_REQUIRED","message":"Authentication required"}}

 my URL is from:

https://api.airtable.com/v0/baseid/tablename?maxRecords=3&view=Grid%20view/-H/Toeken