jinja2.exceptions.UndefinedError: 'dict object' has no attribute 'name' when running Functions.ipynb with Jupyter lab

# Prerequisites

Please answer the following questions for yourself before submitting an issue.

- [x] I am running the latest code. Development is very rapid so there are no tagged versions as of now.
- [x] I carefully followed the [README.md](https://github.com/abetlen/llama-cpp-python/blob/main/README.md).
- [x] I [searched using keywords relevant to my issue](https://docs.github.com/en/issues/tracking-your-work-with-issues/filtering-and-searching-issues-and-pull-requests) to make sure that I am creating a new issue that is not already open (or closed).
- [x] I reviewed the [Discussions](https://github.com/abetlen/llama-cpp-python/discussions), and have a new bug or useful enhancement to share.

# Expected Behavior

Output the temperature of San Francisco, Tokyo, and Paris

# Current Behavior
jinja2.exceptions.UndefinedError: 'dict object' has no attribute 'name'
INFO: 127.0.0.1:61901 - "POST /v1/chat/completions HTTP/1.1" 500 Internal Server Error

# Environment and Context

Apple M3 Max macOS 14.3

Please provide detailed information about your computer setup. This is important in case the issue is not reproducible except for under certain specific conditions.

* Physical (or virtual) hardware you are using, e.g. for Linux:

`$ lscpu`

* Operating System, e.g. for Linux:

`$ uname -a`

* SDK version, e.g. for Linux:

```
$ python3 --version
$ make --version
$ g++ --version
```

# Failure Information (for bugs)

jinja2.exceptions.UndefinedError: 'dict object' has no attribute 'name'
INFO: 127.0.0.1:61901 - "POST /v1/chat/completions HTTP/1.1" 500 Internal Server Error

# Steps to Reproduce

Please provide detailed steps for reproducing the issue. We are not sitting in front of your screen, so the more detail the better.

1. python3 -m llama_cpp.server --model /Users/username/models/functionary-7b-v2-GGUF/functionary-7b-v2.q4_0.gguf --chat_format functionary-v2 --hf_pretrained_model_name_or_path /Users/username/models/functionary-7b-v2-GGUF --n_gpu_layers 16
2. jupyter lab
3. execute the cell of Function Calling with OpenAI Python Client with Jupyter Lab
4. etc.

**Note: Many issues seem to be regarding functional or performance issues / differences with `llama.cpp`. In these cases we need to confirm that you're comparing against the version of `llama.cpp` that was built with your python package, and which parameters you're passing to the context.**

Try the following:

1. `git clone https://github.com/abetlen/llama-cpp-python`
2. `cd llama-cpp-python`
3. `rm -rf _skbuild/` # delete any old builds
4. `python -m pip install .`
5. `cd ./vendor/llama.cpp`
6. Follow [llama.cpp's instructions](https://github.com/ggerganov/llama.cpp#build) to `cmake` llama.cpp
7. Run llama.cpp's `./main` with the same arguments you previously passed to llama-cpp-python and see if you can reproduce the issue. If you can, [log an issue with llama.cpp](https://github.com/ggerganov/llama.cpp/issues)

# Failure Logs

Please include any relevant log snippets or files. If it works under one configuration but not under another, please provide logs for both configurations and their corresponding outputs so it is easy to see where behavior changes.

Also, please try to **avoid using screenshots** if at all possible. Instead, copy/paste the console output and use [Github's markdown](https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax) to cleanly format your logs for easy readability.

Example environment info:
```
llama-cpp-python$ git log | head -1
commit 2355ce2227476ea69f1d6142dedd2f4b7f27a86b

llama-cpp-python$ python3 --version
Python 3.11.9

llama-cpp-python$ pip list | egrep "uvicorn|fastapi|sse-starlette|numpy"
fastapi 0.110.2
numpy 1.26.4
sse-starlette 2.1.0
uvicorn 0.29.0

llama-cpp-python/vendor/llama.cpp$ git log | head -3
commit 2355ce2227476ea69f1d6142dedd2f4b7f27a86b
Author: Olivier DEBAUCHE
Date: Sun Apr 28 05:44:47 2024 +0200
```