I’m working with a Jupyter Notebook running on a browser with Windows OS. I’m trying to save a bar plot using Matplotlib, but I keep encountering an OSError: [Errno 28] Invalid argument error. Here is the code I’m using:

import matplotlib.pyplot as plt

# Given values
x = [5, 2, 3, 7, 23, 43, 30, 16, 4, 3]
y = [20, 30, 40, 50, 60, 65, 70, 80, 90, 100]

# Create the bar plot
plt.bar(range(len(x)), x, tick_label=y)

# Add labels and title
plt.xlabel('Number of Images')
plt.ylabel('Number of Person')
plt.title('Bar Plot Example')

# Save the plot
plt.savefig('bar_plot_valid.png')

# Display the plot
plt.show()

Error:
When I run the above code, I get the following error:

OSError: [Errno 28] Invalid argument: 'bar_plot_valid.png'

Additional Context:
I am running Jupyter Notebook in a web browser on a Windows operating system.

I have checked and ensured that the directory is writable.

The plot displays correctly using plt.show(), but the error occurs when trying to save it using plt.savefig().

What I’ve Tried:

• Changing the filename to a different name.
• Using an absolute path instead of a relative path.
• Checking for any file system restrictions.

Question:

What could be causing this OSError: [Errno 28] Invalid argument error when trying to save a plot, and how can I resolve it?