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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (17,665,788) | $ (11,298,558)
Adjustments to reconcile net loss with cash flows from operations: |  |
Depreciation and amortization expense | 1,260,286 | 1,250,542
Stock-based compensation | 6,702,797 | 823,564
(Gain)/loss on extinguishment of notes payable | (971,522) | 985,842
Amortization of debt discounts and issuance costs | 237,435 | 451,749
Impairment losses | 831,077 | 1,333,566
Provision of Net Investment in direct financing lease | 422,022 |
Warrant exercise inducement |  | 366,795
Changes in operating assets and liabilities: |  |
Accounts receivable | (74,182) | 45,319
Net investment in direct financing lease | 72,681 | 65,333
Other current assets | (188,846) | 446,816
Inventory | 106,674 | (109,213)
Accounts payable and accrued expenses | 544,481 | 1,157,370
Deferred revenue | 9,140 |
Other liabilities | (47,809) | (187,586)
Net cash flows from operating activities | (8,761,554) | (4,668,461)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchase of property and equipment | (90,036) |
Purchase of intangible assets | (26,705) | (22,721)
Investment in other assets |  | (276,715)
Net cash flows from investing activities | (116,741) | (299,436)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from sale of common stock, net of offering costs | 10,282,998 | 5,076,455
Proceeds from exercise of warrants | 318,758 | 1,248,983
Proceeds from exercise of stock options | 44,494 | 1,510,000
Proceeds from paycheck protection program | 485,762 | 485,760
Common stock repurchase |  | (1)
Payment of debt issuance costs |  | (104,800)
Payments on notes payable | (5,947) |
Principal payments on capital lease obligation | (39,232) | (40,157)
Net cash flows from financing activities | 11,086,833 | 8,176,240
Effect of Foreign Currencies | 64,168 | (10,147)
Net Change in Cash | 2,272,706 | 3,198,196
Cash, Beginning of the Year | 3,765,277 | 567,081
Cash, End of the Year | 6,037,983 | 3,765,277
Supplemental Disclosure of Cash Flow Information: |  |
Cash paid for interest | 11,576 | 9,448
Cash paid for income taxes | 22,552 | 36,223
Non-cash Investing and Financing Activities: |  |
Reclass from other assets to intangible assets | 8,270 | 128,005
Modification of warrants issued with convertible debt |  | 95,223
Exchange of notes payable and accrued interest for convertible notes payable |  | 2,662,000
Settlement of accounts payable with issuance of common stock | 349,376 | 8,270
Conversion of convertible note payable and accrued interest to common stock | 6,232,340 |
Reclass from current assets to other assets |  | 106,446
Cashless option and warrant exercises | $ 76 | $ 6

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