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Other Current Assets (Tables)
 9 Months Ended
Jan. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Current Assets

Other current assets consisted of the following at January 31, 2022 and April 30, 2021:

 

   January 31, 2022   April 30, 2021 
   (in thousands) 
Prepaid insurance  $     178   $     194 
Prepaid software & licenses   84    93 
Prepaid sales and marketing   65    37 
Prepaid recruiting   57    12 
Other receivables   24    21 
Deposits   —    68 
Prepaid expenses- other   28    62 
Other current assets  $436   $487