Um what part of this do you not understand?

From above from docktor83 the author:

RX470,480, 570, 580, 590, Vega56, Vega64 = GCN.
You mean the more than 10 year old gpu's ?
No support for those. Continue using other MINER software for those.


Hes not supprting your 10+ year old gpu.  Get newer gpus or use another miner.

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Vega 56/64/Vii works on karlsenhashv2. Tested by me and many others.