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8. Convertible notes (Details Narrative) - USD ($)
9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Jan. 27, 2021
Debt issuance costs $ 120,000 $ 0  
Amortization of debt discount 501,562 $ 0  
Convertible Notes [Member]      
Debt issuance costs 120,000    
Debt discount 926,761   $ 1,390,141
Amortization of debt discount 463,380    
Convertible Notes [Member] | Conversion liability [Membmer]      
Conversion feature liabilities 776,507    
Change in fair value 83,891    
Convertible debt, net 2,729,747    
Warrants [Member]      
Debt issuance costs $ 84,849