我正在尝试使用Jenkins的Office 365 Connector插件，以便将消息推送到Microsoft Teams。当我运行一个简单的测试时，我会收到以下消息。即使我的Jenkins HTTP代理配置在插件管理器中测试外部站点，我也认为我的工作代理会导致问题。此错误消息是否符合该假设？
由于
Using proxy authentication (user=[domain]\[user])
Failed to post data to webhook -
https://outlook.office.com/webhook/[removed]/JenkinsCI/[removed]
java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
at java.io.BufferedInputStream.read(BufferedInputStream.java:336)
at org.apache.commons.httpclient.ContentLengthInputStream.read(ContentLengthInputStream.java:177)
at java.io.FilterInputStream.read(FilterInputStream.java:133)
at org.apache.commons.httpclient.AutoCloseInputStream.read(AutoCloseInputStream.java:115)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at org.apache.commons.httpclient.AutoCloseInputStream.read(AutoCloseInputStream.java:134)
at org.apache.commons.httpclient.HttpMethodBase.getResponseBody(HttpMethodBase.java:697)
at org.apache.commons.httpclient.HttpMethodBase.getResponseBodyAsString(HttpMethodBase.java:810)
at jenkins.plugins.office365connector.HttpWorker.run(HttpWorker.java:83)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)