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Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Dilutive Common Stock Equivalents (Details) (10-K)

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Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Dilutive Common Stock Equivalents (Details) (10-K) - shares
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive common stock equivalents 7,372,530 7,979,784 9,231,384 8,093,044
Convertible Preferred Stock [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive common stock equivalents    
Convertible Notes Payable [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive common stock equivalents 4,368,486 [1] 7,936,740 [1] 6,227,340 [2] 8,050,000 [2]
Stock Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive common stock equivalents 3,000,044 39,044 3,000,044 39,044
Stock Warrants [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive common stock equivalents 4,000 4,000 4,000 4,000
[1] 4,368,486 and 7,936,740 shares of our common stock issuable upon conversion of $1,186,176 and $793,674 of Convertible Notes Payable as of March 31, 2021 and 2020, not accounting for 4.99% beneficial ownership limitations.
[2] 6,227,340 shares of our common stock issuable upon conversion of $1,294,268 of Convertible Notes Payable as of December 31, 2020, not accounting for 4.99% beneficial ownership limitations.