I have wrote the following code:
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 5, 100)
y = x**2
plt.plot(x, y)
plt.xlabel("X-axis")
plt.ylabel("Y-axis")
plt.title("graph of $x^2$")
plt.show()
When I run the code, it shows the following error:

I have installed NumPy, successfully, but still getting this warning. How can I get rid of this?