Ignition Edge 8.3.1 : Error reading updated project from Gateway / resource collection not found: null

Ignition Edge 8.3.1
@paul-griffith
From Designer, I have often have the following error message:

com.inductiveautomation.ignition.common.resourcecollection.ResourceCollectionNotFoundException: resource collection not found: resource collection not found: null

Error reading updated project from Gateway.

com.inductiveautomation.ignition.common.resourcecollection.ResourceCollectionNotFoundException: resource collection not found: resource collection not found: null
	at com.inductiveautomation.ignition.gateway.project.IgnitionProjectManager.lambda$getProjectProps$8(IgnitionProjectManager.java:227)
	at java.util.Optional.orElseThrow(:0)
	at com.inductiveautomation.ignition.gateway.project.IgnitionProjectManager.getProjectProps(IgnitionProjectManager.java:227)
	at com.inductiveautomation.ignition.gateway.project.ProjectsRpcImpl.canEditProject(ProjectsRpcImpl.java:552)
	at com.inductiveautomation.ignition.gateway.project.ProjectsRpcImpl.push(ProjectsRpcImpl.java:155)
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(:0)
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(:0)
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(:0)
	at java.lang.reflect.Method.invoke(:0)
	at com.inductiveautomation.ignition.gateway.rpc.RpcDelegate$DelegateRpcHandler.handle(RpcDelegate.java:271)
	at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.lambda$handle$1(RpcRoutes.java:199)
	at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.safelyHandle(RpcRoutes.java:219)
	at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.handle(RpcRoutes.java:198)
	at com.inductiveautomation.ignition.gateway.dataroutes.Route.service(Route.java:361)
	at com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupImpl.service(RouteGroupImpl.java:120)
	at com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupCollectionServlet.serviceInternal(RouteGroupCollectionServlet.java:139)
	at com.inductiveautomation.ignition.gateway.dataroutes.AbstractRouteGroupServlet.service(AbstractRouteGroupServlet.java:40)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
	at org.eclipse.jetty.ee10.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1379)
	at org.eclipse.jetty.ee10.servlet.ServletHolder.handle(ServletHolder.java:736)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1614)
	at com.inductiveautomation.catapult.filters.GatewayFilter.doFilter(GatewayFilter.java:116)
	at jakarta.servlet.http.HttpFilter.doFilter(HttpFilter.java:97)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:208)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1586)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1547)
	at org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:819)
	at org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:436)
	at org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:464)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575)
	at org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:717)
	at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1060)
	at org.eclipse.jetty.rewrite.handler.RewriteHandler$LastRuleHandler.handle(RewriteHandler.java:159)
	at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)
	at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)
	at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)
	at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)
	at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)
	at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)
	at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)
	at org.eclipse.jetty.rewrite.handler.HeaderPatternRule$1.handle(HeaderPatternRule.java:89)
	at org.eclipse.jetty.rewrite.handler.Rule$Handler.handle(Rule.java:108)
	at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:143)
	at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:805)
	at org.eclipse.jetty.server.Handler$Sequence.handle(Handler.java:805)
	at org.eclipse.jetty.server.Server.handle(Server.java:182)
	at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:662)
	at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:418)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
	at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:478)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:441)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:311)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:979)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1209)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1164)
	at java.lang.Thread.run(:0)

Ignition v8.3.1 (b2025102109)
Java: Azul Systems, Inc. 17.0.16

This looks like an issue we're already tracking; hopefully to be fixed in 8.3.2.
To confirm, when this happens if you look on the gateway status page showing designer connections do you suddenly see a lot (7-10) show up? Are you connecting to a redundant pair? Are you using a VPN or similar network intercept software?

I connect on LAN to a redundant edge gateway, without the backup gateway.

I will check this when it occur to confirm

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