There is no project that is completed without going through any risk (as a part the process), thus, it is necessary to deal with those associated risks in a well-managed way, and avoid mistakes that others did previously in similar field and projects. As my classmates mentioned many possible mistakes that would hinder the project successful functionality, here I would add more of what I found also in my brief online research:”
1. Considering only threats, not opportunities (few managers fail to consider an opportunity as a risk event)
2. Failing to identify the sources, consequences, and outcome of a risk (identify what is causing the risk)
3. Not considering other possible risky incidents in addition to adopting checklists (identify risk is to maintain a checklist)
4. Belittling impacts of risk events (must consider every aspect while determining the risk impact value of the project)
5. Poor project planning
6. Ignorance about potential risks (prioritize the risks which could help in managing the project threats and opportunities)
7. The terms “risk response planning” or “mitigation” are often used interchangeably
8. Ignoring Contingency plans (could act as a backup plan)
9. Lack of accountability of team members for specific risk events
10. Failure to recognize risk management as a continuous process”

Source: medicaldevicecourses website: Top 10 Risk Mistakes in Project Management: How to avoid them? by Maria Thomas