Invalid objective: catagorical_crossentropy

[toseef-ahmd]

While executing demo.py I came across with some errors. I solved some of them but I can't solve this one.

Looking for data spoken_numbers_pcm.tar in data/
Extracting data/spoken_numbers_pcm.tar to data/
'tar' is not recognized as an internal or external command,
operable program or batch file.
Data ready!
loaded batch of 2402 files
Traceback (most recent call last):
File "demo.py", line 15, in
net = tflearn.regression(net, optimizer='adam', learning_rate=learning_rate, loss='catagorical_crossentropy')
File "C:\python35\lib\site-packages\tflearn\layers\estimator.py", line 174, in regression
loss = objectives.get(loss)(incoming, placeholder)
File "C:\python35\lib\site-packages\tflearn\objectives.py", line 10, in get
return get_from_module(identifier, globals(), 'objective')
File "C:\python35\lib\site-packages\tflearn\utils.py", line 25, in get_from_module
raise Exception('Invalid ' + str(module_name) + ': ' + str(identifier))
Exception: Invalid objective: catagorical_crossentropy

This occurs everytime I run demo.py (Note that Data set is already downloaded and is saved in the folder "data/")

Can someone tell me how to fix this issue?