Unable to Start Confluence Due to Malfunctioning Plugin

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Confluence is unable to start. The following appears in the atlassian-confluence.log:

2010-04-20 21:46:44,023 ERROR [main] [atlassian.confluence.event.ConfluenceEventManager] publishEvent An exception was encountered while processing the event:
com.atlassian.plugin.osgi.container.OsgiContainerException: Unable to install bundle
	at com.atlassian.plugin.osgi.container.felix.FelixOsgiContainerManager.installBundle(FelixOsgiContainerManager.java:358)
Caused by: org.osgi.framework.BundleException: Could not create bundle object.
	at org.apache.felix.framework.Felix.installBundle(Felix.java:2370)
	at org.apache.felix.framework.Felix.installBundle(Felix.java:2227)
Caused by: java.lang.NumberFormatException: For input string: "${project"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
	at java.lang.Integer.parseInt(Integer.java:447)
  • A plugin was recently installed in Confluence.


Upon each restart, Confluence loads installed plugins stored in the database. In this case, a plugin is malfunctioning or incompatible with the Confluence version, preventing Confluence from starting up.


Remove the offending plugin from the database. See How to manually remove malfunctioning add-ons.

Still having problems?
If the offending plugin is hard to identify, grab a list of installed plugins from the database for backup reference:

SELECT plugindataid, pluginkey, filename, lastmoddate FROM plugindata ORDER BY lastmoddate DESC;

Then, truncate the table and proceed to reinstall the plugins one by one until the issue returns.

Last modified on Nov 2, 2018

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