Long error messages in email updates

[Patrick Yankee]

Have been getting long error messages in email updates whenever someone updates a task. 

An error occurred whilst rendering this message. Please contact the administrators, and inform them of this bug. Details: ------- org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getIssueTypeIconUrl' in class com.atlassian.jira.mail.util.MailAttachmentsManagerImpl threw exception java.lang.IllegalArgumentException: The resource path [http://rbsolutions.us/images/emailicon.jpg] is not valid at templates/email/macros.vm[line 324, column 69] at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:337) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:284) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:262) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:342) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:212) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:247) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336) at

....etc

Please advise? Thanks

[Nic Brough -Adaptavist-]

The url for the icon is not responding when JIRA tries to use it.  Go to Admin -> Issue Types and change the url for the icon to a valid one that JIRA can read, or upload a valid icon