dask: Dask reshape size error

What happened:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-119-47f24d3281a7> in <module>
----> 1 geotiff_rs = dask.array.reshape(geotiff_flat, (geotiff_flat.shape[2]*geotiff_flat.shape[3], geotiff_flat.shape[0] * geotiff_flat.shape[1]))

~\AppData\Local\Continuum\anaconda3\envs\pangeo3\lib\site-packages\dask\array\reshape.py in reshape(x, shape)
    176 
    177     if reduce(mul, shape, 1) != x.size:
--> 178         raise ValueError("total size of new array must be unchanged")
    179 
    180     if x.shape == shape:

ValueError: total size of new array must be unchanged

What you expected to happen:

Reshape DataArray

Minimal Complete Verifiable Example:

geotiff_rs = dask.array.reshape(geotiff_flat, (geotiff_flat.shape[2]*geotiff_flat.shape[3], geotiff_flat.shape[0] * geotiff_flat.shape[1]))

Anything else we need to know?:

Environment:

• Dask version: 2.3.0
• Python version: 3.8.6
• Operating System: Windows10
• Install method (conda, pip, source): conda