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Summary of shares of common stock issued (Details) - Common Stock [Member] - shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2024 | Jul. 31, 2023 | Apr. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Shares, Outstanding, Beginning Balance | 74,289,351 | 54,568,065 | 54,568,065
Vesting of restricted stock to employees, net of shares withheld of 126,828 to pay taxes | 231,855 |  | 192,742
Vesting of restricted stock to Board of Directors | 61,447 |  | 252,214
Vesting of restricted stock to consultants |  |  | 1,761
Conversion of preferred stock |  |  | 818,334
Issuance of common stock through ATM facilities |  |  | 53,235
Issuance of common stock through public offering |  |  | 18,400,000
Exercise of stock options |  |  | 3,000
Shares, Outstanding, Ending Balance | 74,890,248 | 55,541,875 | 74,289,351
Exercise of warrants | 307,595 |  |

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