Invalid default template

[jkkj]

I got a crash on the current default template. After some consulting with LLMs we concluded that the problem is by missing "tojson" in llama.cpp code. But obviously that is not the case and our template is invalid - see the discussion here:
ggml-org/llama.cpp#19495

TLDR - from comments: "I removed the tojson filter, undefined does not support it in jinja2."

[jkkj]

so the thing is not that tojson is not defined in jinja2, but that some templates use "tools" but our application does not support them so we are passing "undefined"