17. INCOME TAXES (Details-Deferred tax assets and liabilities) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Charitable contributions	$ 0	$ 2,900
Reserve for bad debt	680	17,805
Stock options	760,763	3,448,014
Deferred Revenue	24,077	233,883
Depreciation	0	22,937
Other	59,947	19,661
Net operating loss carryforward	8,996,569	7,755,622
Total gross deferred tax assets	9,842,036	11,500,822
Less: Deferred tax asset valuation allowance	(9,827,176)	(11,432,888)
Total net deferred tax assets	14,860	67,934
Deferred tax liabilities:
Accrued salaries	0	(67,934)
Depreciation	(14,860)
Total deferred tax liabilities	(14,860)	(67,934)
Total net deferred taxes	$ 0	$ 0