Anyone know what this is from :

: Gtk-WARNING **: 17:53:17.609: Negative content width -5 (allocation 13, extents 9x9) while allocating gadget (node entry, owner GtkEntry)

I don't think you have anything to worry about. GTK often throws up a warning. Have a look here. If it bothers you, try changing from gb.gui to gb.gui.qt.

after making the change you suggested I get a different error
this is a new install of Fedora 26 Gnome … May not be completly compatable

QSocketNotifier: Can only be used with threads started with QThread

We will need to see your code, or part of it that creates the warning, to progress any further.

Not much of a program  

(Click to enlarge)