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Note 18 – Derivatives (Tables)
 12 Months Ended
Apr. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
[custom:ScheduleOfAssumptionsUsed2TableTextBlock]
    April 30, 2023    April 30, 2022 
Risk-free interest rate    2.83 – 4.51%    0.52 – 2.87% 
Expected dividend yield   —      —   
Expected term (in years)    2.42 – 3.50    3.42 – 4.50 
Expected volatility    138.49 – 235.23%    211.02 – 292.28% 
Schedule of Derivative Liabilities at Fair Value [Table Text Block]
   2023

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   (1,019,292)   (1,042,129)
Balance, end of period  $588,205   $1,607,497