java.lang.IndexOutOfBoundsException at writing PDF file

I got this error:

i will just recreate a document with pages 1-6.

Exception in thread "main" java.io.IOException: org.apache.pdfbox.exceptions.COSVisitorException: java.lang.IndexOutOfBoundsException: Index: 115, Size: 0
at de.back2heaven.pdf.model.TargetDocumuent.save(TargetDocumuent.java:56)
at de.back2heaven.pdf.model.Document.prozess(Document.java:76)
at de.back2heaven.pdf.model.Document.main(Document.java:56)
Caused by: org.apache.pdfbox.exceptions.COSVisitorException: java.lang.IndexOutOfBoundsException: Index: 115, Size: 0
at org.apache.pdfbox.pdfwriter.COSWriter.visitFromStream(COSWriter.java:1354)
at org.apache.pdfbox.cos.COSStream.accept(COSStream.java:217)
at org.apache.pdfbox.cos.COSObject.accept(COSObject.java:206)
at org.apache.pdfbox.pdfwriter.COSWriter.doWriteObject(COSWriter.java:525)
at org.apache.pdfbox.pdfwriter.COSWriter.doWriteBody(COSWriter.java:435)
at org.apache.pdfbox.pdfwriter.COSWriter.visitFromDocument(COSWriter.java:1122)
at org.apache.pdfbox.cos.COSDocument.accept(COSDocument.java:552)
at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1501)
at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1324)
at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1305)
at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1292)
at de.back2heaven.pdf.model.TargetDocumuent.save(TargetDocumuent.java:54)
... 2 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 115, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:604)
at java.util.ArrayList.get(ArrayList.java:382)
at org.apache.pdfbox.io.RandomAccessBuffer.seek(RandomAccessBuffer.java:84)
at org.apache.pdfbox.io.RandomAccessFileInputStream.read(RandomAccessFileInputStream.java:96)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
at org.apache.pdfbox.pdfwriter.COSWriter.visitFromStream(COSWriter.java:1337)
... 13 more