Deleting included template causes Exception in validation

If you have a page.qute.html with an include like

{#include includes/footer}

{/}

After deleting the includes directory, saving page.qute.html shows Qute LS throwing an exception:

[Trace - 15:38:03] Sending notification 'workspace/didChangeWatchedFiles'.
Params: {
    "changes": [
        {
            "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/target/classes/templates/includes/footer.html",
            "type": 3
        }
    ]
}



[Trace - 15:40:30] Sending notification 'textDocument/didSave'.
Params: {
    "textDocument": {
        "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/page.qute.html"
    }
}


[Trace - 15:40:30] Sending notification 'workspace/didChangeWatchedFiles'.
Params: {
    "changes": [
        {
            "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/page.qute.html",
            "type": 2
        }
    ]
}


[Trace - 15:40:30] Received notification 'textDocument/publishDiagnostics'.
Params: {
    "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/page.qute.html",
    "diagnostics": [
        {
            "range": {
                "start": {
                    "line": 30,
                    "character": 10
                },
                "end": {
                    "line": 30,
                    "character": 25
                }
            },
            "severity": 1,
            "code": "TemplateNotFound",
            "source": "qute",
            "message": "Template not found: `includes/footer`."
        }
    ]
}


[Trace - 15:40:30] Received notification 'textDocument/publishDiagnostics'.
Params: {
    "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/template.html",
    "diagnostics": []
}


Sep 14, 2023 3:40:30 PM com.redhat.qute.project.documents.QuteClosedTextDocument loadTemplate
SEVERE: Error while loading closed template 'file:///Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/includes/footer.html'.
java.io.FileNotFoundException: /Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/includes/footer.html (No such file or directory)
	at java.base/java.io.FileInputStream.open0(Native Method)
	at java.base/java.io.FileInputStream.open(FileInputStream.java:216)
	at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
	at com.redhat.qute.utils.IOUtils.getContent(IOUtils.java:29)
	at com.redhat.qute.project.documents.QuteClosedTextDocument.loadTemplate(QuteClosedTextDocument.java:74)
	at com.redhat.qute.project.documents.QuteClosedTextDocument.getTemplate(QuteClosedTextDocument.java:64)
	at com.redhat.qute.ls.template.TemplateFileTextDocumentService.triggerValidationFor(TemplateFileTextDocumentService.java:392)
	at com.redhat.qute.ls.QuteTextDocumentService.triggerValidationFor(QuteTextDocumentService.java:325)
	at com.redhat.qute.ls.QuteLanguageServer.triggerValidationFor(QuteLanguageServer.java:333)
	at com.redhat.qute.project.QuteProject.validateClosedTemplates(QuteProject.java:152)
	at com.redhat.qute.ls.template.TemplateFileTextDocumentService.triggerValidationFor(TemplateFileTextDocumentService.java:448)
	at com.redhat.qute.ls.QuteTextDocumentService.triggerValidationFor(QuteTextDocumentService.java:335)
	at com.redhat.qute.ls.QuteLanguageServer.triggerValidationFor(QuteLanguageServer.java:343)
	at com.redhat.qute.project.QuteProjectRegistry.didChangeWatchedFiles(QuteProjectRegistry.java:390)
	at com.redhat.qute.ls.template.TemplateFileTextDocumentService.didChangeWatchedFiles(TemplateFileTextDocumentService.java:385)
	at com.redhat.qute.ls.QuteTextDocumentService.didChangeWatchedFiles(QuteTextDocumentService.java:320)
	at com.redhat.qute.ls.QuteLanguageServer.didChangeWatchedFiles(QuteLanguageServer.java:317)
	at com.redhat.qute.ls.QuteWorkspaceService.didChangeWatchedFiles(QuteWorkspaceService.java:60)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.notify(GenericEndpoint.java:152)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleNotification(RemoteEndpoint.java:220)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:187)
	at com.redhat.qute.ls.commons.ParentProcessWatcher.lambda$apply$0(ParentProcessWatcher.java:148)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)

Sep 14, 2023 3:40:30 PM org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleNotification
WARNING: Notification threw an exception: {
  "jsonrpc": "2.0",
  "method": "workspace/didChangeWatchedFiles",
  "params": {
    "changes": [
      {
        "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/src/main/resources/templates/page.qute.html",
        "type": 2
      }
    ]
  }
}
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.notify(GenericEndpoint.java:152)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleNotification(RemoteEndpoint.java:220)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:187)
	at com.redhat.qute.ls.commons.ParentProcessWatcher.lambda$apply$0(ParentProcessWatcher.java:148)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:65)
	... 12 more
Caused by: java.lang.NullPointerException: Cannot invoke "com.redhat.qute.parser.template.Template.getProjectUri()" because "template" is null
	at com.redhat.qute.services.ResolvingJavaTypeContext.<init>(ResolvingJavaTypeContext.java:50)
	at com.redhat.qute.ls.template.TemplateFileTextDocumentService.triggerValidationFor(TemplateFileTextDocumentService.java:395)
	at com.redhat.qute.ls.QuteTextDocumentService.triggerValidationFor(QuteTextDocumentService.java:325)
	at com.redhat.qute.ls.QuteLanguageServer.triggerValidationFor(QuteLanguageServer.java:333)
	at com.redhat.qute.project.QuteProject.validateClosedTemplates(QuteProject.java:152)
	at com.redhat.qute.ls.template.TemplateFileTextDocumentService.triggerValidationFor(TemplateFileTextDocumentService.java:448)
	at com.redhat.qute.ls.QuteTextDocumentService.triggerValidationFor(QuteTextDocumentService.java:335)
	at com.redhat.qute.ls.QuteLanguageServer.triggerValidationFor(QuteLanguageServer.java:343)
	at com.redhat.qute.project.QuteProjectRegistry.didChangeWatchedFiles(QuteProjectRegistry.java:390)
	at com.redhat.qute.ls.template.TemplateFileTextDocumentService.didChangeWatchedFiles(TemplateFileTextDocumentService.java:385)
	at com.redhat.qute.ls.QuteTextDocumentService.didChangeWatchedFiles(QuteTextDocumentService.java:320)
	at com.redhat.qute.ls.QuteLanguageServer.didChangeWatchedFiles(QuteLanguageServer.java:317)
	at com.redhat.qute.ls.QuteWorkspaceService.didChangeWatchedFiles(QuteWorkspaceService.java:60)
	... 17 more

[Trace - 15:40:31] Sending notification 'workspace/didChangeWatchedFiles'.
Params: {
    "changes": [
        {
            "uri": "file:///Users/fbricon/Dev/souk/code-with-qute/target/classes/templates/page.qute.html",
            "type": 2
        }
    ]
}

Read QuteClosedTextDocument.loadTemplate and TemplateFileTextDocumentService.triggerValidationFor, then trace QuteProject.validateClosedTemplates after didChangeWatchedFiles. Reproduce by deleting includes/footer.html and saving page.qute.html. Done means missing included templates still produce TemplateNotFound diagnostics without an exception or notification failure.