Sometimes I have problems with my Xcode server running on a separate mac mini. On my Macbook, Xcode bots are not displayed and / or I cannot connect to the Xcode server in the settings panel.
My Xcode server running on Mac mini also occasionally shows a "Read Error" error ...

I also reset the Xcode server already, but after a while it does not work again.
UPDATE
He is currently working again with a couple of days. What were my changes:
"xcodeserver" . , , xcodeserver Server. , , .