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Property and Equipment (Details Narrative) (10-K) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 67,450 $ 65,254 $ 269,926 $ 250,328