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Income Taxes - Provision for income taxes (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Current    
Federal $ 0 $ 0
State 2,319 2,201
Foreign (Mexico) 885 5,635
Deferred    
Federal 0 0
Foreign 0 0
State 0 0
Provision for income tax expense $ 3,204 $ 7,836