Implement error handling

[Teneroy]

Let's implement mechanisms for error handling:

Tasks:

• Set recursion limit to prevent agents from getting stuck into infinite loops
• Increase timeout limit
• Prevent corruption of checkpointers data when we interrupt the request (test whether it is the case)
• Prevent corruption of checkpointers data when application is stopped unexpectedly (test whether it is the case)
• Investigate whether we need to add some retry functionality in case any of the nodes fail (add in case we need that)