What is the biggest problem you're currently facing in your work or personal projects?

I'd say, scope creep is one of the biggest challenges project managers usually face when managing their projects. Resource constraints, risk management, communication issues, and schedule delays are also important. However, if you have a robust project management tool, you'll minimaze these challenges and ensure a smooth workflow. The good example of such tools is GanttPRO https://ganttpro.com/ - a Gantt chart maker that helps project managers to schedule, manage, and complete projects without risks.