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Equity - Schedule of Black-Scholes Option-Pricing Model Assumptions (Details) (10-K)
9 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Weighted average expected terms (in years) 5 years 2 months 12 days 5 years 2 months 12 days    
Weighted average expected volatility 125.90% 117.30%    
Weighted average risk-free interest rate 0.40% 1.50%    
Expected dividend yield 0.00% 0.00%    
2016 Equity Incentive Plan [Member]        
Weighted average expected terms (in years)     5 years 3 months 19 days 4 years 8 months 12 days
Weighted average expected volatility     117.00% 120.00%
Weighted average risk-free interest rate     1.40% 2.50%
Expected dividend yield     0.00% 0.00%