What happened:
when fit X, get error:

TypeError                                 Traceback (most recent call last)
<ipython-input-11-7d3bc4c475f7> in <module>
      1 km = dask_ml.cluster.KMeans(n_clusters=3, init_max_iter=2, oversampling_factor=10)
----> 2 km.fit(X)
 ...
 ...
 TypeError: expected dtype object, got 'numpy.dtype[float64]'

What you expected to happen:
output:
KMeans(init_max_iter=2, n_clusters=3, oversamplinh_factor=10)

Minimal Complete Verifiable Example:

import dask_ml.cluster

X, y = dask_ml.datasets.make_blobs(n_samples=1000000,
                                   chunks=100000,
                                   random_state=0,
                                   centers=3)
km = dask_ml.cluster.KMeans(n_clusters=3, init_max_iter=2, oversampling_factor=10)
km.fit(X)

Environment:

• Dask version: dask_ml 1.8.0, dask 2021.02.0
• Python version: 3.7
• Operating System: MacOS Catalina 10.15.5
• Install method (conda, pip, source): conda
• Other packages: numpy 1.20.1, pandas 1.2.2