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Financial Instruments (Details Narrative) (10-K) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Concentration of revenues $ 7,650 $ 41,027 $ 346,144 $ 1,926,405
Customer Concentration Risk [Member] | Sales Revenue [Member] | Customer A [Member]        
Concentration of risk, percentage     0.00% 89.00%
Concentration of revenues       $ 1,912,401
Customer Concentration Risk [Member] | Sales Revenue [Member] | Customer B [Member]        
Concentration of risk, percentage     51.00%  
Concentration of revenues     $ 190,313  
Customer Concentration Risk [Member] | Sales Revenue [Member] | Customer C [Member]        
Concentration of risk, percentage     26.00% 3.00%
Concentration of revenues     $ 97,514 $ 67,018