我试图从雅虎金融下载每日股票数据,通过Quantmod软件包在R。我遇到一个错误的消息,说明一个连接无法建立。
install.packages("quantmod")
library(quantmod)
getSymbols.yahoo(Symbols = "SPY")
Error in new.session() : Could not establish session after 5 attempts
我有一个集群,它连接了2个java应用程序,它试图连接到蔚蓝事件中心,但是下面的错误出现了。
2021-06-03 12:22:29,124 ERROR [com.tat.eve.ser.EventHubConsumerSercive] (parallel-1) NONE: java.util.concurrent.TimeoutException: Did not observe any item or terminal signal within 60000ms in 'flatMapMany' (and no fallback has been configured)
应