Model outputs json instead of actually calling the tool, what is the reason?

[JoaoHCopetti]

I'm using this model: https://ollama.com/library/qwen2.5-coder, 7b version.

But when I ask something it outputs a json instead of actually performing the task:

# Prompt
navigate to localhost:5173

# Output
{"name": "browser_mcp_browser_navigate", "arguments": {"url": "http://localhost:5173"}}

It calls the correct function, but doesn't perform anything.
Is it because the model size being small? Or is it related to something else?

Using cloud models works fine tho.