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Common Stock Purchase Warrants - Summary of Warrant Activity (Details) - Warrants [Member]
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Warrants, Vested, Beginning balance | shares 3,388,364
Warrants, Granted | shares 42,550,000
Warrants, Exercised | shares (18,250,000)
Warrants, Forfeited/cancelled | shares (879,766)
Warrants, Vested, Ending balance | shares 26,808,598
Weighted average exercise price, Vested, Beginning balance | $ / shares $ 6.24
Weighted average exercise price, Granted | $ / shares 3.11
Weighted average exercise price, Exercised | $ / shares 2.92
Weighted average exercise price, Forfeited/cancelled | $ / shares 13.43
Weighted average exercise price, Vested, Ending balance | $ / shares $ 3.29