ValueError: buffer size must be a multiple of element size

This error occurs when the size of the buffer passed as an argument to a function is not a multiple of the element size. In other words, the buffer does not contain a whole number of elements.

For example, if you are trying to read a binary file into a buffer, you need to ensure that the size of the buffer is a multiple of the size of each data element in the file. If the file contains 32-bit integers, the buffer size must be a multiple of 4 (32 bits divided by 8 bits per byte).

To fix this error, make sure that the buffer size is a multiple of the element size. If necessary, you can adjust the buffer size to ensure that it is a multiple of the element size.