I'm not sure why you're saying humans aren't involved. Humans are writing the code (often with bugs), troubleshooting operations, supporting other humans using

I'm not sure why you're saying humans aren't involved. Humans are writing the code (often with bugs), troubleshooting operations, supporting other humans using the software, and identifying and fixing bugs. While I agree fixing the bug is the only option, it still has to be identified first. A bug that is based on data can appear to happen "randomly" and if the error is a useless one like the OP or even just "invalid JSON" it can take a long time before isolating the exact cause (especially if it's not obvious which piece of software is even the source of the error), and in that time end users, support and ops people lose trust in the system.