Is it possible to create an multiagent enviornment that generates graphs from a SQLite database?

[MaskedLlama04]

I have been recently trying to do a multiagent project that to summarize, consists on: Through an user input (often a query), the first agent will be dedicated to making the input more suitable for the next agents to understand it (ex. how many dudes are there --> how many different characters are in total). Then, the second agent will be making a connection to a SQLite database (named superheroes.db) so that it gets the data he is going to be working with. This same agent, after reading the table, wil generate some SQL code that answers what the user's want. The third agent will execute this SQL code with a script (I have seen that for a llm its hard to execute code directly). The fourth agent will be analyzing the results, just making a general commentary about them. And then the last agent will be using the SQL code and data generated to generate python code (and execute it through a script) to create a graph that displays the results if necessary. All llm are local (using ollama 3.1:latest and similar) and to create both SQL codes and the python graph codes there is a RAG system to help them (using some examples on a txt files for each agent).

My problem lays on the fact that I have tried to copy some of json examples for flowise online to do mine, but once I try to upload my json on the project there is just a blank screen that does not show anything nor let me do anything. In fact, I would love to know if something like what I'm planning to do is even possible with Flowise.

This is all I have for now. I believe there is enough agents to do the work already, tho I'm not so sure. All the code I have tried is similar to this one, tho never one worked. The documentation is not fully done and from what I know its still in beta the multiagent part, so I'm not sure if its just me or flowise, or even both.

This is what I have for now. It all just gives me a blank scree while trying to upload it to Flowise. I actually got my idea working using Python, but for research purposes I was told to try using flowise and Json. Whats the problem here?
a.json