Caused by: org.openqa.selenium.UnhandledAlertException: Unexpected modal dialog (text: blabla): blabla
[redacted]
Session ID: bf00ad4e-12aa-4ee5-a6d7-a97ecdedb577
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
	at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
	at org.openqa.selenium.remote.ErrorHandler.createUnhandledAlertException(ErrorHandler.java:195)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:156)
	at org.openqa.selenium.remote.http.JsonHttpResponseCodec.reconstructValue(JsonHttpResponseCodec.java:40)
	at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:80)
	at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:44)
	at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:605)
	at org.openqa.selenium.remote.RemoteWebDriver.getWindowHandle(RemoteWebDriver.java:468)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.openqa.selenium.support.events.EventFiringWebDriver.lambda$new$1(EventFiringWebDriver.java:105)
	at org.openqa.selenium.support.events.EventFiringWebDriver$$Lambda$196/965110781.invoke(Unknown Source)
	at com.sun.proxy.$Proxy35.getWindowHandle(Unknown Source)
	at org.openqa.selenium.support.events.EventFiringWebDriver.getWindowHandle(EventFiringWebDriver.java:221)
	at org.jenkinsci.test.acceptance.po.CapybaraPortingLayerImpl.handleAlert(CapybaraPortingLayerImpl.java:375)
	at org.jenkinsci.test.acceptance.po.CapybaraPortingLayerImpl.confirmAlert(CapybaraPortingLayerImpl.java:392)
[redacted]
	... 22 more