Substantial doubt about the company's ability to continue as a going concern.

“Management has concluded that the magnitude and timing of the current accrued and future obligations, together with the Company's limited available liquidity following the substantial cash expenditures described above, give rise to substantial doubt about the Company's ability to continue as a going concern for one year after the date these unaudited condensed consolidated financial statements are issued. Accordingly, management cannot conclude that it is probable that such plans will be effectively implemented and will mitigate the conditions and events that raise substantial doubt about the Company's ability to continue as a going concern. Therefore, substantial doubt about the Company's ability to continue as a going concern has not been alleviated.”