Why is the code not updated to the newer version, i followed the instruction form task $3$a but i keep getting error code, "error in findCorrelation$\_$fast$($x$=$x$,$ cutoff$=$cutoff, verbose $=$ verbose$)$: The correlation matrix has some missing values. My professor said if i update the script correctly with stringsAsFactors $=$TRUE to the read.csv and options$($expressions$=15000)$ near the beginning of the script. How do i fox it$?$