Error Report

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Listings: 
Error Code: 
4
Error Message: 
Operation details
Installable Units Reported: 
org.tigris.subversion.subclipse.feature.group,4.2.3.201707071932
Detailed Message: 
Your original request has been modified. "Subversion Revision Graph" is already installed, so an update will be performed instead. "SVNKit Client Adapter" is already installed, so an update will be performed instead. "Subclipse" is already installed, so an update will be performed instead. Cannot complete the install because one or more required items could not be found. Software being installed: Subclipse Integration for Mylyn (Optional) 4.2.0.1 (org.tigris.subversion.subclipse.mylyn.feature.feature.group 4.2.0.1) Missing requirement: Subclipse Integration for Mylyn (Optional) 4.2.0.1 (org.tigris.subversion.subclipse.mylyn.feature.feature.group 4.2.0.1) requires 'org.eclipse.mylyn.tasks.ui 0.0.0' but it could not be found