Upgrading to 3.5.20 results in a java.lang.AbstractMethodError

Description

Upgrading the Support Tools Plugin throws a java.lang.AbstractMethodError, which prevents pages from being rendered. This effectively renders Confluence useless.

The following error is thrown in the logs:

And this error shows up in the UI:

Steps to Reproduce

  • Launch Confluence v.5.2.3

  • Upload the plugin file for STP v.3.5.20

  • Navigate to the dashboard

Workaround

Environment

Confluence versions 5.2.3, 5.2.5

Assignee

Deividi Luvison

Reporter

Brian Tom

Components

None

Labels

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Add-on Type

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Risk factor

None

Affected Product/s

None

Affects versions

Priority

Critical
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