Conversational Agent: Error when passing object as input parameter to playbook/flow

[Subo]

In my playbook I call a tool that returns json. This response is passed to another playbook as input parameter with a type defined in tool.

When I run my agent, it throws an error:  

Error! Reached max number of action invocations.

However, if I reduce the size of json response, everything works fine. Are there any specific restrictions on the size of values ​​that can be passed to input parameters?

PS: The same issue happens when I pass json as input parameter to flow