1. What is the error id 999 and what are its symptoms in the context of KM-BFT?
2. How does the error occur and what are its potential causes?
3. What are the potential solutions to address this error and how do they differ from one another?
The solution for an "Other exceptions" error would depend on the context and specific cause of the exception. It could involve identifying the root cause of the error, debugging the code, and making necessary modifications or adjustments to fix the issue. Additionally