Search for duplicate files

Error creating thumbnail: About to transcode 1 SVG file(s) Converting Flag_of_Taiwan.svg to /var/www/html/w/images/temp/transform_cb98dcbf258c.png ... org.apache.batik.transcoder.TranscoderException: null Enclosed Exception: file:/var/www/html/w/images/temp/svg_879096a30d5df8a68435d314/Flag_of_Taiwan.svg:-1 The attribute "xlink:href" of the element <use> is required at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:228) at org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTranscoder.java:92) at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractTranscoder.java:142) at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:158) at org.apache.batik.apps.rasterizer.SVGConverter.transcode(SVGConverter.java:1008) at org.apache.batik.apps.rasterizer.SVGConverter.execute(SVGConverter.java:719) at org.apache.batik.apps.rasterizer.Main.execute(Main.java:956) at org.apache.batik.apps.rasterizer.Main.main(Main.java:1009) Caused by: org.apache.batik.bridge.BridgeException: file:/var/www/html/w/images/temp/svg_879096a30d5df8a68435d314/Flag_of_Taiwan.svg:-1 The attribute "xlink:href" of the element <use> is required at org.apache.batik.bridge.SVGUseElementBridge.buildCompositeGraphicsNode(SVGUseElementBridge.java:120) at org.apache.batik.bridge.SVGUseElementBridge.createGraphicsNode(SVGUseElementBridge.java:98) at org.apache.batik.bridge.GVTBuilder.buildGraphicsNode(GVTBuilder.java:213) at org.apache.batik.bridge.GVTBuilder.buildComposite(GVTBuilder.java:171) at org.apache.batik.bridge.GVTBuilder.build(GVTBuilder.java:82) at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:210) ... 7 more ... error (SVGConverter.error.while.rasterizing.file)