I cannot load my excel file though openpyxl
*Created originally on Bitbucket by [liam_park (박형렬)](https://bitbucket.org/%7Bf72c8093-f454-4a6f-b6eb-343f5786050c%7D/)*
there. I cannot load my excel file though openpyxl. the file is 1,402KB. I tried to do New excel file. it can be opened. but my excel file show below error.
```
#!python
D:\1.업무\Python\venv\Scripts\python.exe D:/1.업무/Python/AVDD.py
Traceback (most recent call last):
File "D:/1.업무/Python/AVDD.py", line 5, in <module>
wb = load_workbook(filename)
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\reader\excel.py", line 312, in load_workbook
reader.read()
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\reader\excel.py", line 273, in read
apply_stylesheet(self.archive, self.wb)
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\styles\stylesheet.py", line 189, in apply_stylesheet
stylesheet = Stylesheet.from_tree(node)
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\styles\stylesheet.py", line 103, in from_tree
return super(Stylesheet, cls).from_tree(node)
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\descriptors\serialisable.py", line 104, in from_tree
return cls(**attrib)
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\styles\stylesheet.py", line 93, in __init__
self._normalise_numbers()
File "D:\1.업무\Python\venv\lib\site-packages\openpyxl\styles\stylesheet.py", line 166, in _normalise_numbers
fmt = BUILTIN_FORMATS[style.numFmtId]
KeyError: 56
```
this is my code
```
#!python
from openpyxl import load_workbook
from openpyxl.drawing.image import Image
filename="1.xlsx"
wb = load_workbook(filename)
print("done")
```
*Attachments:* [1.xlsx](/uploads/70884c354abcd62d58a9ebb870673add/1.xlsx)
issue