Description

GObject support is needed to run the Windows application installation wizard and CrossOver bottle management tool. 
This is not needed to run Windows applications.

Resolution

On CrossOver 17 and greater, the simplest solution to fix this issue is to run:

/path/to/cxoffice/bin/cxfix pygi

Or add --show-all to see how CrossOver would fix it on your platform and others.

Alternatively you may try one of the commands below.

• Arch Linux : pacman -Syu python-gobject
• Debian : apt-get install python3-gi
• Fedora : yum install python3-gobject
• openSUSE : zypper install python3-gobject

Notes:

• cxfix --show-all may have more up-to-date fixes.
• The commands usually also apply to derived distributions. So for instance a fix for Debian is typically also applicable to Ubuntu, Linux Mint, Deepin and Pop! OS. Similarly a fix for Fedora likely also works on Red Hat Enterprise Linux, CentOS, etc.