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Prepayments and deposits
 12 Months Ended
Oct. 31, 2021
Prepayments And Deposits [Abstract]  
Prepayments and deposits Prepayments and deposits
October 31, 2021October 31, 2020
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Prepaid lease deposits886,95133,501
Prepaid equipment deposits3,231,836—
Prepaid insurance3,839,88059,582
Other prepaids688,331870,868
8,646,998963,951