show pre-template errors on screen in gsh template if configured to show

2021-04-16 15:50:28,093: [pool-2-thread-146] ERROR UiV2Template$2.callLogic(375) -  - error

java.util.regex.PatternSyntaxException: Illegal character range near index 4

^[a-ZA-Z0-9_, ]+$

    ^

        at java.util.regex.Pattern.error(Pattern.java:1969)

        at java.util.regex.Pattern.range(Pattern.java:2669)

        at java.util.regex.Pattern.clazz(Pattern.java:2576)

        at java.util.regex.Pattern.sequence(Pattern.java:2077)

        at java.util.regex.Pattern.expr(Pattern.java:2010)

        at java.util.regex.Pattern.compile(Pattern.java:1702)

        at java.util.regex.Pattern.<init>(Pattern.java:1352)

        at java.util.regex.Pattern.compile(Pattern.java:1028)

        at edu.internet2.middleware.grouper.app.gsh.template.GshTemplateInputValidationType$2.doesValuePassValidation(GshTemplateInputValidationType.java:28)

        at edu.internet2.middleware.grouper.app.gsh.template.GshTemplateValidationService.validateInputs(GshTemplateValidationService.java:346)

        at edu.internet2.middleware.grouper.app.gsh.template.GshTemplateValidationService.validate(GshTemplateValidationService.java:32)

        at edu.internet2.middleware.grouper.app.gsh.template.GshTemplateExec$1.callback(GshTemplateExec.java:315)

        at edu.internet2.middleware.grouper.app.gsh.template.GshTemplateExec$1.callback(GshTemplateExec.java:1)

        at edu.internet2.middleware.grouper.GrouperSession.callbackGrouperSession(GrouperSession.java:976)

        at edu.internet2.middleware.grouper.GrouperSession.internal_callbackRootGrouperSession(GrouperSession.java:1045)

        at edu.internet2.middleware.grouper.GrouperSession.internal_callbackRootGrouperSession(GrouperSession.java:1012)

        at edu.internet2.middleware.grouper.app.gsh.template.GshTemplateExec.execute(GshTemplateExec.java:289)

        at edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template$2.callLogic(UiV2Template.java:366)

        at edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template$2.callLogic(UiV2Template.java:1)

        at edu.internet2.middleware.grouper.util.GrouperCallable$1.callback(GrouperCallable.java:203)

        at edu.internet2.middleware.grouper.GrouperSession.callbackGrouperSession(GrouperSession.java:976)

        at edu.internet2.middleware.grouper.util.GrouperCallable.callLogicWithSessionIfExists(GrouperCallable.java:200)

        at edu.internet2.middleware.grouper.util.GrouperCallable.call(GrouperCallable.java:166)

        at java.util.concurrent.FutureTask.run(FutureTask.java:266)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

        at java.lang.Thread.run(Thread.java:748)

[root@bba17c6c47254376bdfd3713f17fa135-2291675529 grouper]#