AttributeError: 'SimpleImputer' object has no attribute '_fit_dtype'

hi i m new into this FLAML.
i m getting this error while predicting my banknote problem

while using colab i m not getting this error but on pycharm using fastapi i m getting this error
**`AttributeError: 'SimpleImputer' object has no attribute '_fit_dtype'`**

heres my code:

**@app.post('/predict')
async def predict(data:person):
per=data.dict()
df = pd.DataFrame([[per['variance'],per['skewness'],per['curtosis'],per['entropy']]],columns=['variance','skewness','curtosis','entropy'])
print(df.head(1))
prediction=automl.predict(df.head(1))
print(prediction)**

this is my data

**variance skewness curtosis entropy
0 1.22 0.333 0.44 -3.22**

what should i do?