Shiny .getReactiveEnvironment（）$currentContext（）中出错

请帮忙， 获取有关此代码附近的反应式函数的错误：

stockstxtclosure <- reactive({
    query <- parseQueryString(clientData$url_search)

    stockstweets = searchTwitter(query[["ticker"]], n=10, lang="en")
    stockstxt = sapply(stockstweets, function(x) x$getText())

    return (stockstxt)
  })

  stockstxt = stockstxtclosure()

  stockstxt = gsub("(RT|via)((?:\\b\\W*@\\w+)+)", "", stockstxt)

错误是：

Error in .getReactiveEnvironment()$currentContext() : Operation not allowed without an active reactive context. (You tried to do something that can only be done from inside a reactive expression or observer.)

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您是否尝试过将代码放入反应式表达式或观察者中，如错误所述？是的，我尝试过。事实上，隔离帮助了我。