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Other current assets (Details) - USD ($) | Jul. 31, 2023 | Apr. 30, 2023
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Prepaid inventory | $ 1,708,515 | $ 359,500
Prepaid expenses | 1,229,875 | 752,564
Accrued interest income | 82,318 | 151,671
Total | $ 3,020,708 | $ 1,263,735

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