stopwords<- unlist(read.table("E:etc/stopwords.txt",
                              stringsAsFactors=F, encoding="utf-8",quote=""))

In scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
EOF within quoted string

解决方法：
禁用qutoe，即设置quote = ""，你把语句改为>ebay=read.csv("ebay.csv",stringsAsFactors=FALSE,quote = ""),即可


来自知乎小小林
https://www.zhihu.com/question/30546087/answer/67960361