LOSS PER SHARE - Schedule of Basic and Diluted Loss per Share (Details) - USD ($)	6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net loss, basic	$ (21,348,355)		$ (19,993,848)	$ (5,879,152)	$ (9,681,801)
Net loss, diluted	$ (21,348,355)		$ (19,993,848)	$ (5,879,152)	$ (9,681,801)
Basic weighted-average number of shares outstanding (in shares)	15,868,521	12,205,057	13,551,150	8,283,567	6,217,476
Diluted weighted-average number of shares outstanding (in shares)	15,868,521	12,205,057	13,551,150	8,283,567	6,217,476
Basic loss per weighted-average share (in dollars per share)	$ (1.35)	$ (0.47)	$ (1.48)	$ (0.71)	$ (1.56)
Diluted loss per weighted-average share (in dollars per share)	$ (1.35)	$ (0.47)	$ (1.48)	$ (0.71)	$ (1.56)