dstack() takes 1 positional argument but 3 were given

The `dstack()` function from the NumPy library takes multiple arrays and stacks them along the third dimension. It should be called with a sequence of arrays to stack. It seems like you are passing more than one argument to the function, which can cause the error message you mentioned.

Here's an example of how you can use `dstack()`:

import numpy as np

# Create some arrays
a = np.array([1, 2, 3])
b = np.array([4, 5, 6])
c = np.array([7, 8, 9])

# Stack them along the third dimension
result = np.dstack((a, b, c))

print(result)

In this example, we create three arrays `a`, `b`, and `c`. We then pass them as a tuple to the `dstack()` function. The resulting array stacks them along the third dimension, creating a 3x3x3 array.