Stockholders' Equity (Deficit) - Summary of Warrant Activity (Details)	12 Months Ended
	Apr. 30, 2023 $ / shares shares
Class of Warrant or Right [Line Items]
Warrants Outstanding and Exercisable, Beginning Balance | shares	1,442,401
Warrants Outstanding and Exercisable, Issued | shares	4,052,826
Warrants Outstanding and Exercisable, Exercised | shares	(1,524,159)
Warrants Outstanding And Exercisable Forfeited | shares	(14,766)
Warrants Outstanding and Exercisable, Cancelled | shares	(1,365,960)
Warrants Outstanding and Exercisable, Ending Balance | shares	2,590,342
Exercise Price Per Share, Cancelled	$ 5.16
Weighted Average Strike Price Per Share, Beginning Balance	9.00
Weighted Average Strike Price Per Share, Issued	3.75
Weighted Average Strike Price Per Share, Exercised	3.86
Weighted Average Strike Price Per Share, Forfeited	13.96
Weighted Average Strike Price Per Share, Cancelled	5.16
Weighted Average Strike Price Per Share, Ending Balance	3.73
Minimum
Class of Warrant or Right [Line Items]
Exercise Price Per Share, Beginning Balance	3.47
Exercise Price Per Share, Issued	0.0001
Exercise Price Per Share, Exercised	0.0001
Exercise Price Per Share, Forfeited	12.21
Exercise Price Per Share, Ending Balance	0.0001
Maximum
Class of Warrant or Right [Line Items]
Exercise Price Per Share, Beginning Balance	15.18
Exercise Price Per Share, Issued	4.25
Exercise Price Per Share, Exercised	4.25
Exercise Price Per Share, Forfeited	15.81
Exercise Price Per Share, Ending Balance	$ 15.18