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Note 19 – Derivatives (Tables)

9 Months Ended

Jan. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

[custom:ScheduleOfAssumptionsUsed2TableTextBlock]

			January 31, 2023				April 30, 2022
Risk-free interest rate			2.83 – 4.51%				0.52 – 2.87%
Expected dividend yield			—				—
Expected term (in years)			2.67 – 3.50				3.42 – 4.50
Expected volatility			161.40 – 235.23%				211.02 – 292.28%

Schedule of Derivative Liabilities at Fair Value [Table Text Block]

		January 31, 2023				April 30, 2022
Balance, beginning of period		$	1,607,497			$	2,812,767
Additions			—				—
Eliminated upon conversion of notes/exercise of warrants			—				(163,141	)
Changes in fair value			(751,397	)			(1,042,129	)
Balance, end of period		$	856,100			$	1,607,497