title: ImportError: cannot import name 'hash_unicode'
body: <p>While importing spacy using &quot;import spacy&quot;, I am getting this error.</p>
  <pre><code>ImportError                               Traceback (most recent call last)
  &lt;ipython-input-1-76a01d9c502b&gt; in &lt;module&gt;
  ----&gt; 1 import spacy
  
  ~/.local/lib/python3.6/site-packages/spacy/__init__.py in &lt;module&gt;
        8 
        9 # These are imported as part of the API
  ---&gt; 10 from thinc.api import prefer_gpu, require_gpu, require_cpu  # noqa: F401
       11 from thinc.api import Config
       12 
  
  ~/.local/lib/python3.6/site-packages/thinc/api.py in &lt;module&gt;
       20 from .backends import use_pytorch_for_gpu_memory, use_tensorflow_for_gpu_memory
       21 
  ---&gt; 22 from .layers import Dropout, Embed, expand_window, HashEmbed, LayerNorm, Linear
       23 from .layers import Maxout, Mish, MultiSoftmax, Relu, softmax_activation, Softmax, LSTM
       24 from .layers import CauchySimilarity, ParametricAttention, Logistic
  
  ~/.local/lib/python3.6/site-packages/thinc/layers/__init__.py in &lt;module&gt;
       52 from .padded2list import padded2list
       53 from .remap_ids import remap_ids
  ---&gt; 54 from .strings2arrays import strings2arrays
       55 from .with_array import with_array
       56 from .with_array2d import with_array2d
  
  ~/.local/lib/python3.6/site-packages/thinc/layers/strings2arrays.py in &lt;module&gt;
        1 from typing import Tuple, List, Callable, Sequence
  ----&gt; 2 from murmurhash import hash_unicode
        3 
        4 from ..model import Model
        5 from ..config import registry
  
  ImportError: cannot import name 'hash_unicode'
  </code></pre>
  <p>System is ubuntu and GPU is not available. How to solve this.</p>
  <p>Also, Is there way to reinstall spacy completely by removing all the packages of spacy as I suppose that might solve the problem.</p>