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Consolidated Statements of Changes in Stockholders’ Equity (Parentheticals)
12 Months Ended
Sep. 30, 2021
USD ($)
Statement of Stockholders' Equity [Abstract]  
Issuance of common stock in private placement offering, net of costs $ 1,549,602
Issuance of common stock in registered direct offering, net of costs $ 5,520,160