qei-demo-for-blog.ipynb throws an exception on the fourth cell of the notebook when demonstrating the concept of qEI on 2 points

System information

OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Google Colab "Linux" Linux d6ef734f45e9 6.1.85+ # 1 SMP PREEMPT_DYNAMIC Thu Jun 27 21:05:47 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Are you using google COLAB notebook: (Yes/No): Yes
Browser if using Jupyter [e.g. chrome, safari]: Safari
Browser version if using Jupyter [e.g. 22] 18.1
Mobile device (e.g. iPhone 8, Pixel 2, Samsung Galaxy) if the issue happens on mobile device: N/A
QMCPy installed from (source or binary): Binary
QMCPy version: 1.5
Python version: python 3.10.2
Installed using virtualenv? pip? conda?: pip
GCC or Windows C Compiler version: N/A

Describe the problem Upon executing cell four a syntax error occurs.

Logs / Any other info Repeatable on both Python 3.9 and 3.10 since Colab uses 3.10 and we use 3.9 in our Conda environments.

To Reproduce Open qei-demo-for-blog.ipynb in google colab and after installing qmcpy go into runtime and select run all.

Expected behavior Cell four should not throw an exception.

Screenshots

QMCSoftware / QMCSoftware