I am trying to create/modify my system user guide help pages but the module doesn't isn't showing up in my navigator
Confirmed in New York and Orlando
Seems that the sys_application record for "System User Guide" has the role "nobody" instead of "admin" which does not allow any user to see the module. https://<your instance>.service-now.com/sys_app_application.do?sys_id=006db31147222100ba13a5554ee490f8&sysparm_view=
This seems to be due to the sys_application record has the wrong version loaded.
To fix this you will need to reinstall the plugin com.glide.user_guide.
1. Go to https://<your_instance>.service-now.com/nav_to.do?uri=%2Fv_plugin.do%3Fsysparm_stack%3D$allappsmgmt.do%26sys_id%3Dcom.glide.user_guide
2. Click on the Activate/Repair link and click okay.
This will fix the plugin and will allow the System User Guides module so it displays correctly.