Don't use Fishbone diagram for Root Cause Analysis
If you're interested in my 6-step problem solving template, it's available for free through this link: https://www.tommentink.com/problemsolvingtemplate
#Fishbone, or #Ishikawa, diagrams are a great tool for broadening the scope of possible causes - direct first level cause that it is. But don't use it to dive deeper and search for the root causes.
To keep your problem solving overview clear for both yourself and your stakeholders, I suggest you use this fishbone cause-and-effect diagram to explore and expand, then follow up with a 5 why analysis of a small number of selected causes.
#problemsolving