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v3.22.2.2

Other current assets (Details) - USD ($) | Oct. 31, 2022 | Apr. 30, 2022
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Prepaid inventory | $ 3,705,853 | $ 1,707,085
Accrued interest income | 312,931 | 385,730
Prepaid expenses | 434,655 | 262,069
Total | $ 4,453,439 | $ 2,354,884

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