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Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)

v3.22.2
CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($)
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2020
Statement of Cash Flows [Abstract] Ìý Ìý Ìý
Cash and cash equivalents $ 6,482,750 $ 12,472,082 Ìý
Restricted cash 6,433,397 1,193,997 Ìý
Total cash and cash equivalents and restricted cash $ 12,916,147 $ 13,666,079 $ 17,906,765