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Schedule of Pro Forma Financial Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Business Combination and Asset Acquisition [Abstract]    
Revenue $ 2,621 $ 2,302
Net loss $ (18,413) $ (14,174)
Basic and diluted net loss per share $ (0.34) $ (0.47)