XML 53 R42.htm IDEA: XBRL DOCUMENT v3.21.1
Prepaid expenses and Other current assets (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Prepaid expenses and Other current assets [Abstract]    
VAT receivable $ 287,523 $ 259,831
Grants receivable 91,182 95,064
Other current receivables 891,168 140,126
Prepaid Expenses 2,851,681 1,724
Total $ 4,121,554 $ 496,745