Error saying no applicable method for meta applied to an object of class when trying to create TermDocumentMatrix

") id.2 <- id.1 + 5 text.data <- policy.HTML.page[id.1:id.2] td.1 <- gsub(pattern = "

", replacement = "", x = text.data, ignore.case = TRUE, perl = FALSE, fixed = FALSE, useBytes = FALSE) td.2 <- gsub(pattern = "

", replacement = "", x = td.1, ignore.case = TRUE, perl = FALSE, fixed = FALSE, useBytes = FALSE) text.d <- td.2; rm(text.data, td.1, td.2) #Create corpus and clean library(tm) library(SnowballC) txt <- VectorSource(text.d); rm(text.d) txt.corpus <- Corpus(txt) txt.corpus <- tm_map(txt.corpus, tolower) txt.corpus <- tm_map(txt.corpus, removeNumbers) txt.corpus <- tm_map(txt.corpus, removePunctuation) txt.corpus <- tm_map(txt.corpus, removeWords, stopwords("english")) txt.corpus <- tm_map(txt.corpus, stripWhitespace); #inspect(docs[1]) txt.corpus <- tm_map(txt.corpus, stemDocument) # NOTE ERROR WHEN CREATING TDM tdm <- TermDocumentMatrix(txt.corpus)