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Mutect2/GATK4.5 error

Hello,
I am generating normal vcf files using tumor-only mode with Mutect2/GATK4.5 and bam file after BQSR. I got a error message:

java.lang.IllegalArgumentException: contig must be non-null and not equal to *, and start must be >= 1
at org.broadinstitute.hellbender.utils.read.SAMRecordToGATKReadAdapter.setPosition(SAMRecordToGATKReadAdapter.java:92)
at org.broadinstitute.hellbender.utils.clipping.ClippingOp.applyHARDCLIP_BASES(ClippingOp.java:381)
at org.broadinstitute.hellbender.utils.clipping.ClippingOp.apply(ClippingOp.java:73)
at org.broadinstitute.hellbender.utils.clipping.ReadClipper.clipRead(ReadClipper.java:145)
at org.broadinstitute.hellbender.utils.clipping.ReadClipper.clipRead(ReadClipper.java:126)
at org.broadinstitute.hellbender.utils.clipping.ReadClipper.hardClipSoftClippedBases(ReadClipper.java:330)
at org.broadinstitute.hellbender.utils.clipping.ReadClipper.hardClipSoftClippedBases(ReadClipper.java:333)
at org.broadinstitute.hellbender.tools.walkers.haplotypecaller.AssemblyBasedCallerUtils.finalizeRegion(AssemblyBasedCallerUtils.java:84)
at org.broadinstitute.hellbender.tools.walkers.haplotypecaller.AssemblyBasedCallerUtils.assembleReads(AssemblyBasedCallerUtils.java:243)
at org.broadinstitute.hellbender.tools.walkers.mutect.Mutect2Engine.callRegion(Mutect2Engine.java:210)
at org.broadinstitute.hellbender.tools.walkers.mutect.Mutect2.apply(Mutect2.java:245)
at org.broadinstitute.hellbender.engine.AssemblyRegionWalker.processReadShard(AssemblyRegionWalker.java:254)
at org.broadinstitute.hellbender.engine.AssemblyRegionWalker.traverse(AssemblyRegionWalker.java:231)
at org.broadinstitute.hellbender.engine.GATKTool.doWork(GATKTool.java:838)
at org.broadinstitute.hellbender.cmdline.CommandLineProgram.runTool(CommandLineProgram.java:119)
at org.broadinstitute.hellbender.cmdline.CommandLineProgram.instanceMainPostParseArgs(CommandLineProgram.java:176)
at org.broadinstitute.hellbender.cmdline.CommandLineProgram.instanceMain(CommandLineProgram.java:195)
at org.broadinstitute.hellbender.Main.runCommandLineProgram(Main.java:131)
at org.broadinstitute.hellbender.Main.mainEntry(Main.java:152)
at org.broadinstitute.hellbender.Main.main(Main.java:233)

The re-calibration bam was generated using gatk3.7, without error. Other bams generated the same way did not throw error messages.

Thanks!

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