Newton-Raphson algorithm failed to converge.

[greptail]

Not working for below data, but in excel it is working -500,2010-06-09 -500,2010-07-12 -500,2010-08-10 -500,2010-09-13 -500,2010-10-11 -500,2010-11-10 -500,2010-12-10 -500,2011-01-10 -500,2011-02-10 -500,2011-03-10 -500,2011-04-11 -500,2011-05-10 -500,2011-06-10 -500,2011-07-11 -500,2011-08-10 -500,2011-09-12 -500,2011-10-10 -500,2011-11-11 -500,2011-12-12 -500,2012-01-10 -500,2012-02-10 -500,2012-03-12 -500,2012-04-10 -500,2012-05-10 -500,2012-06-11 -500,2012-07-10 -500,2012-08-10 -500,2012-09-10 -500,2012-10-10 -500,2012-11-12 -500,2012-12-10 -500,2013-01-10 -500,2013-02-11 -500,2013-03-11 -500,2013-04-10 -500,2013-05-10 -500,2013-06-10 -500,2013-07-10 -500,2013-08-12 -500,2013-09-10 -500,2013-10-10 -500,2013-11-11 -500,2013-12-10 -500,2014-01-10 500,2014-02-10 -500,2014-02-10 -500,2014-03-03 -500,2014-04-10 -500,2014-05-12 -500,2014-06-10 -500,2014-07-10 -500,2014-08-11 -500,2014-09-10 -500,2014-10-10 -500,2014-11-10 -500,2014-12-10 -500,2015-01-12 -500,2015-02-10 -500,2015-03-10 -500,2015-04-10 -500,2015-05-11 -500,2015-06-10 -500,2015-07-10 -500,2015-08-10 -500,2015-09-10 -500,2015-10-12 -500,2015-11-10 -500,2015-12-10 -500,2016-01-11 -500,2016-02-10 -500,2016-03-10 -500,2016-04-11 -500,2016-05-10 -500,2016-06-10 -500,2016-07-11 -500,2016-08-10 -500,2016-09-12 -500,2016-10-10 -500,2016-11-10 -500,2016-12-12 -500,2017-01-10 -500,2017-02-10 -500,2017-03-10 -4000,2017-03-29 -4000,2017-03-30 -4000,2017-03-31 -500,2017-04-10 -500,2017-05-10 -500,2017-06-12 -500,2017-07-10 -500,2017-08-10 -500,2017-09-11 -500,2017-10-10 -500,2017-11-10 -500,2017-12-11 -500,2018-01-10 -500,2018-02-12 -500,2018-03-12 -500,2018-04-10 -500,2018-05-10 -500,2018-06-11 -500,2018-07-10 -500,2018-08-10 -500,2018-09-10 -500,2018-10-10 -500,2018-11-12 -500,2018-12-10 -500,2019-01-10 -500,2019-02-11 -500,2019-03-11 -15000,2019-03-29 -500,2019-04-10 -500,2019-05-10 -500,2019-06-10 -500,2019-07-10 -500,2019-08-13 -500,2019-09-11 -500,2019-10-10 -500,2019-11-11 -500,2019-12-10 -500,2020-01-10 -500,2020-02-10 -500,2020-03-11 -500,2020-04-13 -500,2020-05-11 -500,2020-06-10 -499.98,2020-07-10 -499.98,2020-08-10 -499.98,2020-09-10 -499.98,2020-10-12 -499.98,2020-11-10 -499.98,2020-12-10 -499.98,2021-01-11 -499.98,2021-02-11 -499.98,2021-03-12 -9999.5,2021-03-26 -9999.5,2021-03-31 -499.98,2021-04-13 -499.98,2021-05-11 -499.98,2021-06-11 -499.98,2021-07-13 -499.98,2021-08-11 -499.98,2021-09-13 -499.98,2021-10-11 -499.98,2021-11-11 -499.98,2021-12-13 -499.98,2022-01-11 -499.98,2022-02-11 -499.98,2022-03-11 -1499.93,2022-03-28 -4999.75,2022-03-28 -9999.5,2022-04-04 -499.98,2022-04-11 -499.98,2022-05-11 -499.98,2022-05-20 -499.98,2022-06-14 -499.98,2022-06-22 -499.98,2022-07-11 -499.98,2022-07-20 -499.98,2022-08-11 -499.98,2022-08-22 -499.98,2022-09-12 -499.98,2022-09-20 -499.98,2022-10-11 -499.98,2022-10-20 -499.98,2022-11-11 -499.98,2022-11-22 0 ,2022-12-02