I try the "climtrends" package in R. But I can not understand the meaning of 'dataseries' in page no.8 of "climtrends" package overview. While I run the BuishandRangeTest in r, find the following error message: "[1] NA NA NA NA.......There were 50 or more warnings (use warnings() to see the first 50)"

I do hereby attach the package overview and a sample data set of me also:

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