B1IF Error ( of a null object loaded from local variable 'str')

B1IF suddenly started to fail, I get an error in 1 step, I have re installed and the error remains. Any idea how to solve?

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#7803 --- 2019-10-19T23:59:30, millis=1571540370495

LevelSEVERELoggercom.sap.b1i.xcelleratorClass/Methodcom.sap.b1i.bizprocessor.BizProcException, dumpBPExThread

com.sap.b1i.bizprocessor.BizProcException: BPE001 Nested exception: com.sap.b1i.xcellerator.XcelleratorException: XCE001 Nested exception:
java.lang.NullPointerException: while trying to invoke the method java.lang.String.length() of a null object loaded from local variable 'str'
	at com.sap.b1i.bizprocessor.AtomScheduler.process(AtomScheduler.java:189)
	at com.sap.b1i.bizprocessor.IncludeAtom.process(IncludeAtom.java:200)
	at com.sap.b1i.bizprocessor.IncludeAtom.processOuter(IncludeAtom.java:171)
	at com.sap.b1i.bizprocessor.BizProcessor.process(BizProcessor.java:452)
	at com.sap.b1i.xcellerator.IPOStepInstance.executeTransaction(IPOStepInstance.java:1094)
	at com.sap.b1i.xcellerator.IPOWorkResource.execute(IPOWorkResource.java:425)
	at com.sap.b1i.xcellerator.IPOStepInstance.executeInner(IPOStepInstance.java:683)
	at com.sap.b1i.xcellerator.IPOStepInstance.executeOuter(IPOStepInstance.java:518)
	at com.sap.b1i.xcellerator.Xcellerator.trigger(Xcellerator.java:1422)
	at com.sap.b1i.xcellerator.SingleAdapterPool.trigger(SingleAdapterPool.java:546)
	at com.sap.b1i.xcellerator.XclScheduler$JobRunner$JobThread.run(XclScheduler.java:295)
Caused by: com.sap.b1i.xcellerator.XcelleratorException: XCE001 Nested exception:
java.lang.NullPointerException: while trying to invoke the method java.lang.String.length() of a null object loaded from local variable 'str'
	at com.sap.b1i.xcellerator.IPOStepInstance.performSecIO(IPOStepInstance.java:952)
	at com.sap.b1i.xcellerator.IPOStepInstance.performSecIO(IPOStepInstance.java:975)
	at com.sap.b1i.xcellerator.XsPort.call(XsPort.java:72)
	at com.sap.b1i.bizprocessor.CallAtomClassInstance.execute(CallAtomClassInstance.java:70)
	at com.sap.b1i.bizprocessor.CallAtom.process(CallAtom.java:152)
	at com.sap.b1i.bizprocessor.AtomStatusToken.process(AtomStatusToken.java:433)
	at com.sap.b1i.bizprocessor.AtomScheduler.run(AtomScheduler.java:791)
	at com.sap.b1i.bizprocessor.BPThreadPool$BPRunnable.run(BPThreadPool.java:51)
	at com.sap.b1i.bizprocessor.QedWorkerThreadPool$QedWorkerThread$BeforeAfterThread.run(QedWorkerThreadPool.java:243)
	at com.sap.b1i.bizprocessor.QedWorkerThreadPool$QedWorkerThread.start(QedWorkerThreadPool.java:310)
	at com.sap.b1i.bizprocessor.BPThreadPool.createBPThread(BPThreadPool.java:77)
	at com.sap.b1i.bizprocessor.AtomScheduler.process(AtomScheduler.java:232)
	at com.sap.b1i.bizprocessor.IncludeAtom.process(IncludeAtom.java:200)
	at com.sap.b1i.bizprocessor.AtomStatusToken.process(AtomStatusToken.java:427)
	at com.sap.b1i.bizprocessor.AtomScheduler.run(AtomScheduler.java:791)
	at com.sap.b1i.bizprocessor.BPThreadPool$BPRunnable.run(BPThreadPool.java:51)
	at com.sap.b1i.bizprocessor.QedWorkerThreadPool$QedWorkerThread$BeforeAfterThread.run(QedWorkerThreadPool.java:243)
	at com.sap.b1i.bizprocessor.QedWorkerThreadPool$QedWorkerThread.start(QedWorkerThreadPool.java:310)
	at com.sap.b1i.bizprocessor.BPThreadPool.createBPThread(BPThreadPool.java:77)
	at com.sap.b1i.bizprocessor.AtomScheduler.process(AtomScheduler.java:232)
	at com.sap.b1i.bizprocessor.IncludeAtom.process(IncludeAtom.java:200)
	at com.sap.b1i.bizprocessor.AtomStatusToken.process(AtomStatusToken.java:427)
	at com.sap.b1i.bizprocessor.AtomScheduler.run(AtomScheduler.java:791)
	at com.sap.b1i.bizprocessor.BPThreadPool$BPRunnable.run(BPThreadPool.java:51)
	at com.sap.b1i.bizprocessor.QedWorkerThreadPool$QedWorkerThread$BeforeAfterThread.run(QedWorkerThreadPool.java:243)
	at com.sap.b1i.bizprocessor.QedWorkerThreadPool$QedWorkerThread.start(QedWorkerThreadPool.java:310)
	at com.sap.b1i.bizprocessor.BPThreadPool.createBPThread(BPThreadPool.java:77)
	at com.sap.b1i.bizprocessor.AtomScheduler.process(AtomScheduler.java:232)
	... 10 more
Caused by: java.lang.NullPointerException: while trying to invoke the method java.lang.String.length() of a null object loaded from local variable 'str'
	at java.util.StringTokenizer.<init>(StringTokenizer.java:199)
	at java.util.StringTokenizer.<init>(StringTokenizer.java:221)
	at com.sap.b1i.bizprocessor.PLTConvPool.getConvByMimeType(PLTConvPool.java:277)
	at com.sap.b1i.xcl_htta.HTTAAdapter.handleError(HTTAAdapter.java:1166)
	at com.sap.b1i.xcl_htta.HTTAAdapter.call(HTTAAdapter.java:1070)
	at com.sap.b1i.xcellerator.IPOStepInstance.handleIO(IPOStepInstance.java:1721)
	at com.sap.b1i.xcellerator.IPOStepInstance.performSecIO(IPOStepInstance.java:948)
	... 37 more

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