Could not find com/opensymphony/webwork/default.properties

15-06-07 12:20:06,569 WARN [NotificationSender:thread-1] [opensymphony.webwork.config.DefaultConfiguration] <init> Could not find webwork.properties
2015-06-07 12:20:06,570 ERROR [NotificationSender:thread-1] [opensymphony.webwork.config.DefaultConfiguration] <init> Could not find com/opensymphony/webwork/default.properties
java.lang.IllegalStateException: com/opensymphony/webwork/default.properties missing
	at com.opensymphony.webwork.config.PropertiesConfiguration.<init>(PropertiesConfiguration.java:40)
	at com.opensymphony.webwork.config.DefaultConfiguration.<init>(DefaultConfiguration.java:49)
	at com.opensymphony.webwork.config.Configuration.getDefaultConfiguration(Configuration.java:207)
	at com.opensymphony.webwork.config.Configuration.getConfiguration(Configuration.java:67)
	at com.opensymphony.webwork.config.Configuration.isSet(Configuration.java:113)
	at com.opensymphony.webwork.views.velocity.VelocityManager.getInstance(VelocityManager.java:78)
	at com.atlassian.confluence.util.velocity.VelocityUtils.getVelocityEngine(VelocityUtils.java:116)