R语言tm包stemCompletion函数词干补全异常求助

我在使用R语言tm包中的stemCompletion函数对词干化后的VCorpus进行词干补全时遇到问题，此前该函数可正常运行，但现在即使是过去的数据集也无法使用。

我的输入是经过预处理（tolower、removePunctuation、stripWhitespace、removeNumber、removeWords、stemDocument）的VCorpus，所有步骤均正常，直到执行stemCompletion环节。

以下是部分代码及输出：

# Load Data
Data <- read.csv("AMAZON_FASHION_5.csv", header=TRUE, sep = ";", dec = ",", colClasses = "character", fill = TRUE)

# View Data
View(Data)

Data <- data.frame(Data)

# Define Corpus
Data$reviewText <- iconv(Daten$reviewText, "WINDOWS-1252", sub="byte")
Text <- VCorpus(VectorSource(Daten$reviewText))
writeLines(strwrap(as.character(Text[[69]])))

输出：
was terribly disappointed the pants were way too large in the legs my husband looked
like he was wearing blown up clown pants

预处理步骤（省略具体代码） #

# Create a PlainTextDocument
Text <- tm_map(Text, PlainTextDocument)

# Create a copy of object "Text" to use later as a dictionary for stemming completion
Text.copy <- Text

# Stem document 
Text_stemmed <- tm_map(Text, stemDocument, language = "english")

# Show comment Nr.69
writeLines(strwrap(as.character(Text_stemmed[[69]])))

输出：
terribl disappoint pant way larg leg husband look like wear blown clown pant

Text_comp <- stemCompletion(Text_stemmed, dictionary=Text.copy, type = "prevalent")
# Show comment Nr.69
writeLines(strwrap(as.character(Text_comp[[69]])))

输出：
character(0)

执行stemCompletion后，第69条评论输出为character(0)；若不执行PlainTextDocument转换，输出为69，且返回的Text_comp为字符型，无法调用meta、inspect等函数，报错提示：

Error in UseMethod("meta", x) : 
  no applicable method for 'meta' applied to an object of class "character"

我还尝试了Zhao提出的改进stemCompletion方法，但仍未得到预期结果。恳请各位帮忙排查问题原因。

内容的提问来源于stack exchange，提问作者d4rkneo