Quarterly report pursuant to Section 13 or 15(d)

Going Concern (Details Narrative)

v3.20.4
Going Concern (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Jan. 28, 2021
Jan. 31, 2021
Oct. 31, 2020
Jul. 31, 2020
Jan. 31, 2020
Oct. 31, 2019
Jul. 31, 2019
Jan. 31, 2021
Jan. 31, 2020
Apr. 30, 2020
Cash   $ 13,992,772           $ 13,992,772   $ 2,749,957
Working capital   14,000,000           14,000,000    
Accumulated deficit   (41,090,318)           (41,090,318)   $ (31,587,952)
Net loss   $ (3,700,580) $ (4,844,666) $ (957,120) $ (961,458) $ (2,227,086) $ (1,308,599) (9,502,366) $ (4,497,143)  
Cash used in operating activities               (6,365,362) (3,551,402)  
Proceeds from issuance of private placement               $ 8,371,167  
Common stock, par value   $ 0.001           $ 0.001   $ 0.001
Additional paid in capital   $ 71,816,386           $ 71,816,386   $ 41,093,050
Purchase Agreement [Member] | Accredited Investors [Member]                    
Number of common stock issued for sale 914,136                  
Common stock at per share $ 10.54                  
Purchase Agreement [Member] | Accredited Investors [Member] | Private Placement [Member]                    
Number of warrats issued 457,068                  
Exercise price of warrants $ 14.50                  
Proceeds from issuance of private placement $ 9,600,000                  
Subscription Agreements [Member]                    
Common stock, shares to be issued   794,136           794,136    
Common stock, par value   $ 794           $ 794    
Additional paid in capital   $ 8,370,373           $ 8,370,373