WARN reporting.VisionComponents.PDFViewer - Unable to open URL

15:36:03.538 [AWT-EventQueue-0] WARN reporting.VisionComponents.PDFViewer - Unable to open URL ‘\APPS\Automatisation\Documentations\Instructions maintenance\VANNE (Schwerdtel).pdf’
java.net.MalformedURLException: no protocol: \APPS\Automatisation\Documentations\Instructions maintenance\VANNE (Schwerdtel).pdf
at java.base/java.net.URL.(Unknown Source)
at java.base/java.net.URL.(Unknown Source)
at java.base/java.net.URL.(Unknown Source)
at com.inductiveautomation.factorypmi.plugins.reporting.components.PDFViewer.tryOpen(PDFViewer.java:217)
at com.inductiveautomation.factorypmi.plugins.reporting.components.PDFViewer$FilePathSetter.run(PDFViewer.java:165)
at com.inductiveautomation.ignition.client.util.EDTUtil$ProcessQueue.run(EDTUtil.java:127)
at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)