Has anybody an idea why Jenkins UI tests fail in our CI instance since a couple 
of days due to a org.openqa.selenium.json.JsonException?

Caused by: org.openqa.selenium.json.JsonException: Expected to read a START_MAP 
but instead have: END. Last 0 characters read: 
Build info: version: '3.141.59', revision: 'e82be7d358', time: 
'2018-11-14T08:17:03'
System info: host: 'ip-172-31-21-171', ip: '172.31.21.171', os.name: 'Linux', 
os.arch: 'amd64', os.version: '5.8.0-1038-aws', java.version: '11.0.6'
Driver info: driver.version: RemoteWebDriver
        at org.openqa.selenium.json.JsonInput.expect(JsonInput.java:290)
        at org.openqa.selenium.json.JsonInput.beginObject(JsonInput.java:220)
        at 
org.openqa.selenium.json.MapCoercer.lambda$apply$1(MapCoercer.java:64)
        at 
org.openqa.selenium.json.JsonTypeCoercer.lambda$null$6(JsonTypeCoercer.java:145)
        at 
org.openqa.selenium.json.JsonTypeCoercer.coerce(JsonTypeCoercer.java:126)
        at org.openqa.selenium.json.Json.toType(Json.java:69)
        at org.openqa.selenium.json.Json.toType(Json.java:55)
        at org.openqa.selenium.json.Json.toType(Json.java:50)
        at 
org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:112)
        ... 74 more
Examples:
- 
https://ci.jenkins.io/job/Plugins/job/warnings-ng-plugin/job/PR-1010/1/testReport/io.jenkins.plugins.analysis.warnings/SmokeTests/linux_11___Build__linux_11____shouldRecordIssuesInPipelineAndExpandTokens/
 
<https://ci.jenkins.io/job/Plugins/job/warnings-ng-plugin/job/PR-1010/1/testReport/io.jenkins.plugins.analysis.warnings/SmokeTests/linux_11___Build__linux_11____shouldRecordIssuesInPipelineAndExpandTokens/>
- 
https://ci.jenkins.io/job/Plugins/job/git-forensics-plugin/job/master/lastCompletedBuild/testReport/io.jenkins.plugins.forensics/ForensicsPluginUiTest/linux_11___Build__linux_11____shouldAggregateToolsIntoSingleResult/
 
<https://ci.jenkins.io/job/Plugins/job/git-forensics-plugin/job/master/lastCompletedBuild/testReport/io.jenkins.plugins.forensics/ForensicsPluginUiTest/linux_11___Build__linux_11____shouldAggregateToolsIntoSingleResult/>

After switching from chrome-driver to firefox-driver at least Jenkins CI seems 
to work again (GitHub actions still fail). 

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