java.lang.UnsupportedOperationException: unsupported

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java.lang.UnsupportedOperationException: unsupported
at com.ansorgit.plugins.bash.lang.psi.impl.arithmetic.SimpleExpressionsImpl.computeNumericValue(SimpleExpressionsImpl.java:258)
at com.ansorgit.plugins.bash.editor.inspections.inspections.EvaluateArithmeticExpressionInspection$1.visitArithmeticExpression(EvaluateArithmeticExpressionInspection.java:55)
at com.ansorgit.plugins.bash.lang.psi.impl.arithmetic.AbstractExpression.accept(AbstractExpression.java:51)
at com.intellij.codeInspection.InspectionEngine.acceptElements(InspectionEngine.java:81)
at com.intellij.codeInsight.daemon.impl.LocalInspectionsPass.a(LocalInspectionsPass.java:310)
at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:123)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1026)
at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:96)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:494)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:443)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.concurrency.ApplierCompleter.b(ApplierCompleter.java:106)
at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.pollAndExecCC(ForkJoinPool.java:1190)
at java.util.concurrent.ForkJoinPool.helpComplete(ForkJoinPool.java:1879)
at java.util.concurrent.ForkJoinPool.awaitJoin(ForkJoinPool.java:2045)
at java.util.concurrent.ForkJoinTask.doJoin(ForkJoinTask.java:390)
at java.util.concurrent.ForkJoinTask.join(ForkJoinTask.java:719)
at java.util.concurrent.ForkJoinPool.invoke(ForkJoinPool.java:2616)
at com.intellij.concurrency.JobLauncherImpl.invokeConcurrentlyUnderProgress(JobLauncherImpl.java:60)
at com.intellij.concurrency.JobLauncher.invokeConcurrentlyUnderProgress(JobLauncher.java:57)
at com.intellij.codeInsight.daemon.impl.LocalInspectionsPass.a(LocalInspectionsPass.java:321)
at com.intellij.codeInsight.daemon.impl.LocalInspectionsPass.a(LocalInspectionsPass.java:229)
at com.intellij.codeInsight.daemon.impl.LocalInspectionsPass.collectInformationWithProgress(LocalInspectionsPass.java:136)
at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:82)
at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:70)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.b(PassExecutorService.java:434)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1026)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:427)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:494)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:443)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.c(PassExecutorService.java:426)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:402)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

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