Help/Support Sideloadly error xcode 7.3

[Matteo02P 1 iPhone Xs Max 14.3]

I'm trying to install an ipa file but sideloadly showing this error
 

Sideloadly version 0.18, Windows 10.0, amd64

Using IPA file: C:/Users/********/Downloads/unc0ver_Release_6.1.1.ipa: c2ecd26e478e6dd78b0367014c0cee02

Checking iOS version...

Failed to check iOS version: Could not connect to lockdown: Invalid HostID (-21), will mangle bundleID

Obtaining team ID

Using team "*************" (Individual) with id FD3W4*****

Making sure device ID ****************************** is registered

ERROR: Guru Meditation 0db732@740:3aea77 Failed: (3019) Authentication Error. Xcode 7.3 or later is required to continue developing with your Apple ID.

 

 

Photo here: https://imgur.com/gallery/CnVihtA

[Rook 567.7k iPad Pro (2nd gen) 17.4 Donor]

Hello,

Please tick the Anisette option if your account is a free Apple Developer account.

[Matteo02P 1 iPhone Xs Max 14.3]

Already tried but show the same error