Check09.hs:5:1: error: [GHC-75165]
    Prelude: Can't be safely imported!
    The package (base-4.17.0.0) the module resides in isn't trusted.

Check09.hs:6:1: error: [GHC-75165]
    Data.ByteString.Char8: Can't be safely imported!
    The package (bytestring-0.11.3.0) the module resides in isn't trusted.