Amendment dated November 7, 2019 to the following Convertible Promissory Notes: (a) Note dated October 24, 2014, as amended, in the principal amount of 000,000; (b) Note dated May 24, 2015, as amended, in the principal amount of $2,000,000; (c) Note dated February 24, 2016 in the principal amount of $2,000,000; (d) Note dated March 19, 2019 in the principal amount of $2,000,000; and (e) Note dated September 19, 2019 in the principal amount of $1,100,000