# Error when using 'get\_normalized\_expression'

**URL:** <https://discourse.scverse.org/t/error-when-using-get-normalized-expression/1038>\
**Category:** scvi-tools\
**Tags:** scvi\
**Created:** [January 5, 2023, 8:59am UTC](https://discourse.scverse.org/t/error-when-using-get-normalized-expression/1038 "2023-01-05T08:59:57Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Lisa9797](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.scverse.org/lisa9797/32/493_2.png) [@Lisa9797](https://discourse.scverse.org/u/Lisa9797)\
**Post date:** [January 5, 2023, 8:59am UTC](https://discourse.scverse.org/t/error-when-using-get-normalized-expression/1038/1 "2023-01-05T08:59:58Z")

</div>

I got ‘state\_registry’ error when using model.get\_normalized\_expression on ‘CondSCVI’ model.

KeyError Traceback (most recent call last)  
 in   
----\> 1 denoised = model.get\_normalized\_expression(adata\_subset, library\_size=1e4)  
2 denoised.iloc[:5, :5]

3 frames  
/usr/local/lib/python3.8/dist-packages/torch/autograd/grad\_mode.py in decorate\_context(\*args, \*\*kwargs)  
25 def decorate\_context(\*args, \*\*kwargs):  
26 with self.clone():  
—\> 27 return func(\*args, \*\*kwargs)  
28 return cast(F, decorate\_context)  
29

/usr/local/lib/python3.8/dist-packages/scvi/model/base/\_rnamixin.py in get\_normalized\_expression(self, adata, indices, transform\_batch, gene\_list, library\_size, n\_samples, n\_samples\_overall, batch\_size, return\_mean, return\_numpy)  
100 )  
101  
 → 102 transform\_batch = \_get\_batch\_code\_from\_category(  
103 self.get\_anndata\_manager(adata, required=True), transform\_batch  
104 )

/usr/local/lib/python3.8/dist-packages/scvi/model/\_utils.py in \_get\_batch\_code\_from\_category(adata\_manager, category)  
233 category = [category]  
234  
 → 235 batch\_mappings = adata\_manager.get\_state\_registry(  
236 REGISTRY\_KEYS.BATCH\_KEY  
237 ).categorical\_mapping

/usr/local/lib/python3.8/dist-packages/scvi/data/\_manager.py in get\_state\_registry(self, registry\_key)  
371  
372 return attrdict(  
 → 373 self.\_registry[\_constants.\_FIELD\_REGISTRIES\_KEY][registry\_key][  
374 \_constants.\_STATE\_REGISTRY\_KEY  
375 ]

KeyError: ‘state\_registry’