"usage" field missing, then we crash and the error is due to we want to read nothing value.

[Cvikli]

We have to handle the case where there is no "usage" field.
I don't know if my solution the the best way, but it spare the immediate error, so we can handle the issue somehow else.

What we got due to the error:
┌ Error: Task failed
│ exception =
│ MethodError: no method matching getindex(::Nothing, ::Symbol)
│ The function getindex exists, but no method is defined for this combination of argument types.
└ @ TODO4AI ~/repo/todoforai/agent/src/interfaces/clientAPI/handlers_agent.jl:109

Stacktrace:
[1] aigenerate(prompt_schema::PromptingTools.AnthropicSchema, prompt::Vector{PromptingTools.AbstractChatMessage}; verbose::Bool, api_key::String, model::String, return_all::Bool, dry_run::Bool, conversation::Vector{PromptingTools.AbstractMessage}, streamcallback::StreamCallbacksExt.StreamCallbackWithHooks, no_system_message::Bool, aiprefill::Nothing, http_kwargs::@NamedTuple{}, api_kwargs::@NamedTuple{top_p::Float64, temperature::Float64, max_tokens::Int64, stop_sequences::Vector{String}}, cache::Symbol, betas::Nothing, kwargs::@kwargs{}) @ PromptingTools ~/.julia/packages/PromptingTools/XSraD/src/llm_anthropic.jl:520
[2] aigenerate(prompt::Vector{PromptingTools.AbstractChatMessage}; model::String, kwargs::@kwargs{cache::Symbol, api_kwargs::@NamedTuple{top_p::Float64, temperature::Float64, max_tokens::Int64, stop_sequences::Vector{String}}, streamcallback::StreamCallbacksExt.StreamCallbackWithHooks, verbose::Bool}) @ PromptingTools ~/.julia/packages/PromptingTools/XSraD/src/llm_interface.jl:511
[3] work(agent::EasyContext.FluidAgent{EasyContext.SysMessageV1}, conv::EasyContext.Session{EasyContext.Message}; cache::Symbol, no_confirm::Bool, highlight_enabled::Bool, process_enabled::Bool, on_error::Function, on_done::typeof(EasyContext.noop), on_start::Function, io::TODO4AI.TodoIOWrapper, tool_kwargs::Dict{String, String}, thinking::Nothing, MAX_NUMBER_OF_TOOL_CALLS::Int64) @ EasyContext ~/repo/EasyContext.jl/src/agents/FluidAgent.jl:171

Or what would be the best way to handle these cases?

[svilupp]

Do you have some MWE to get this fail? I remember Tamas asking for some changes in the StreamingCallbacks in this vein, but we could never replicate it.

[Cvikli]

It was totally random. It can be even issue on the other side. Not sure how to replicate.

Actually happened during a workflow. And I couldn't get actually any data from the case as it actually fails before we could get any data. :D