BUILD SUCCESSFUL in 5s
1 actionable task: 1 executed
Build step 'Invoke Gradle script' changed build result to SUCCESS
Archiving artifacts
[confluence] Uploading attachments to Confluence page: https://confluence.xxx.com/display/YYY/ZZZ
[confluence] Found 2 archived artifact(s) to upload to Confluence...
[confluence] Uploading 2 file(s) to Confluence...
[confluence]  - Uploading file: X1_(9308).apk (application/octet-stream)
[confluence]    done: https://confluence.XXX.com/download/attachments/5571366/X1_%289308%29.apk?version=1&modificationDate=1558596764844&api=v2
[confluence]  - Uploading file: X2_(9308).apk (application/octet-stream)
[confluence]    done: https://confluence.XXX.com/download/attachments/5571366/X2_%289308%29.apk?version=1&modificationDate=1558596765878&api=v2
[confluence] Done
[confluence] EXPERIMENTAL: performing storage format edits on Confluence 4.0
[confluence] Performing wiki edits: Insert content after token
ERROR: Build step failed with exception
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
    at java.lang.String.substring(String.java:1927)
    at com.myyearbook.hudson.plugins.confluence.wiki.generators.MarkupGenerator.expandAttachmentsLink(MarkupGenerator.java:105)
    at com.myyearbook.hudson.plugins.confluence.wiki.generators.MarkupGenerator.expand(MarkupGenerator.java:81)
    at com.myyearbook.hudson.plugins.confluence.wiki.generators.FileGenerator.generateMarkup(FileGenerator.java:69)
    at com.myyearbook.hudson.plugins.confluence.wiki.editors.MarkupEditor.performReplacement(MarkupEditor.java:68)
    at com.myyearbook.hudson.plugins.confluence.ConfluencePublisher.performEdits(ConfluencePublisher.java:552)
    at com.myyearbook.hudson.plugins.confluence.ConfluencePublisher.performWikiReplacements(ConfluencePublisher.java:510)
    at com.myyearbook.hudson.plugins.confluence.ConfluencePublisher.perform(ConfluencePublisher.java:469)
    at hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:81)
    at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
    at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
    at hudson.model.Build$BuildExecution.post2(Build.java:186)
    at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
    at hudson.model.Run.execute(Run.java:1840)
    at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
    at hudson.model.ResourceController.execute(ResourceController.java:97)
    at hudson.model.Executor.run(Executor.java:429)
Build step 'Publish to Confluence' marked build as failure
Finished: FAILURE