# Ignition 8.3: Project Load Issues When Switching Git Branches **URL:** \ **Category:** Ignition\ **Tags:** ignition83\ **Created:** [October 1, 2025, 2:17pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132 "2025-10-01T14:17:55Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![adrien.couturier](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@adrien.couturier](https://forum.inductiveautomation.com/u/adrien.couturier)\ **Post date:** [October 1, 2025, 2:17pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/1 "2025-10-01T14:17:55Z")
Hi everyone, I’m running into an issue with version control in **Ignition 8.3** 😔. Here’s what I did: 1. I added my `data` folder to a Git repository and committed the current state in the `Main` branche. 2. I created a new branch `develop` and made some modifications to a project. 3. When I switched back to the original branch `main` (containing the initial project with no modifications), I expected the project to return to its original state. However, when Ignition tries to load the project after switching branches, I get this error: ```python Error loading project. ProtoSerializationException: Fallback serialization failed caused by NoSuchElementException: No value present Ignition v8.3.0 (b2025091510) Java: Azul Systems, Inc. 17.0.16 ``` Here are the screenshots : ![Message](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/3/735122b54778908f8dcce521c288b8bf13596168.jpeg) ![Details](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/6/86e6195d37c164804f035d10b7bb6d5ac3cc8e26.jpeg) Has anyone encountered something similar? Is there a recommended way to manage Git branches with **Ignition 8.3** projects to avoid this kind of issue? Any help would be appreciated. Thanks. Adrien ---
**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\ **Post date:** [October 1, 2025, 3:24pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/2 "2025-10-01T15:24:35Z")
If you’re using version control to add/move/remove any files, you’ll need to trigger a scan in order for the Gateway to recognize the new files. For Project content, you’ll want to scan with the projects route - as opposed to the full Gateway scan. On your Gateway (and assuming you are authenticated) you can access the API documentation. The relevant project route is this one: `/openapi#tag/config-management/paths/~1data~1api~1v1~1scan~1projects/post`. Alternatively, you can manage the same through the UI by clicking the `Scan File System` button on the Projects page. ![Screenshot 2025-10-01 at 8.22.34 AM](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/a/9a36a5baba59930fe9d0ad1e5b0877e99e3ffc0e.png) ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [October 1, 2025, 3:26pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/3 "2025-10-01T15:26:07Z")
Can you copy the `full` stacktrace of that error message and post it here [as preformatted text](https://forum.inductiveautomation.com/t/wiki-how-to-post-code-on-this-forum/77831)? ---
**Author:** ![adrien.couturier](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@adrien.couturier](https://forum.inductiveautomation.com/u/adrien.couturier)\ **Post date:** [October 1, 2025, 3:46pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/4 "2025-10-01T15:46:05Z")
I can now open my project, but the changes made in the `develop` branch are showing up in the `main` branch, which is very strange... ---
**Author:** ![adrien.couturier](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@adrien.couturier](https://forum.inductiveautomation.com/u/adrien.couturier)\ **Post date:** [October 1, 2025, 3:47pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/5 "2025-10-01T15:47:18Z")
Here is the full stacktrace ```python java.util.concurrent.ExecutionException: com.inductiveautomation.ignition.common.rpc.proto.ProtoSerializationException: Fallback serialization failed at java.base/java.util.concurrent.CompletableFuture.reportGet(Unknown Source) at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source) at com.inductiveautomation.ignition.client.util.gui.progress.Task.runBlocking(Task.java:146) at com.inductiveautomation.ignition.client.util.gui.progress.Task.runBlocking(Task.java:125) at com.inductiveautomation.ignition.designer.IgnitionDesigner.loadProject(IgnitionDesigner.java:930) at com.inductiveautomation.ignition.designer.IgnitionDesigner$Handler$1.openProject(IgnitionDesigner.java:2235) at com.inductiveautomation.ignition.designer.ProjectDialog.lambda$openProject$5(ProjectDialog.java:227) at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.base/java.security.AccessController.doPrivileged(Unknown Source) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.run(Unknown Source) Caused by: com.inductiveautomation.ignition.common.rpc.proto.ProtoSerializationException: Fallback serialization failed at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters.fallbackSerializer(BuiltinAdapters.java:398) at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.encodeValue(ProtoRpcSerializer.java:119) at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.encodeRpcMessage(ProtoRpcSerializer.java:85) at com.inductiveautomation.ignition.common.rpc.proto.ProtoRpcSerializer.writeReturnValue(ProtoRpcSerializer.java:412) at com.inductiveautomation.ignition.gateway.rpc.CompositeSerializer.writeReturnValue(CompositeSerializer.java:37) at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes$OutputWriter.write(RpcRoutes.java:345) at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.safelyHandle(RpcRoutes.java:227) at com.inductiveautomation.ignition.gateway.rpc.RpcRoutes.handle(RpcRoutes.java:198) at com.inductiveautomation.ignition.gateway.dataroutes.Route.service(Route.java:361) at com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupImpl.service(RouteGroupImpl.java:120) at com.inductiveautomation.ignition.gateway.dataroutes.RouteGroupCollectionServlet.serviceInternal(RouteGroupCollectionServlet.java:133) at com.inductiveautomation.ignition.gateway.dataroutes.AbstractRouteGroupServlet.service(AbstractRouteGroupServlet.java:40) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614) at org.eclipse.jetty.ee10.servlet.ServletHolder$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) Caused by: java.util.NoSuchElementException: No value present at java.util.Optional.get(:0) at com.inductiveautomation.ignition.common.resourcecollection.json.ImmutableResourceSerializer.lambda$serialize$4(ImmutableResourceSerializer.java:89) at java.lang.Iterable.forEach(:0) at com.inductiveautomation.ignition.common.resourcecollection.json.ImmutableResourceSerializer.serialize(ImmutableResourceSerializer.java:86) at com.inductiveautomation.ignition.common.resourcecollection.json.ImmutableResourceSerializer.serialize(ImmutableResourceSerializer.java:23) at com.inductiveautomation.ignition.common.gson.internal.bind.TreeTypeAdapter.write(TreeTypeAdapter.java:88) at com.inductiveautomation.ignition.common.gson.Gson.toJson(Gson.java:842) at com.inductiveautomation.ignition.common.gson.Gson.toJsonTree(Gson.java:712) at com.inductiveautomation.ignition.common.gson.internal.bind.TreeTypeAdapter$GsonContextImpl.serialize(TreeTypeAdapter.java:175) at com.inductiveautomation.ignition.common.resourcecollection.json.RuntimeResourceCollectionSerializer.lambda$serialize$3(RuntimeResourceCollectionSerializer.java:74) at java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(:0) at java.util.Collections$UnmodifiableCollection.forEach(:0) at com.inductiveautomation.ignition.common.resourcecollection.json.RuntimeResourceCollectionSerializer.serialize(RuntimeResourceCollectionSerializer.java:73) at com.inductiveautomation.ignition.common.resourcecollection.json.RuntimeResourceCollectionSerializer.serialize(RuntimeResourceCollectionSerializer.java:25) at com.inductiveautomation.ignition.common.gson.internal.bind.TreeTypeAdapter.write(TreeTypeAdapter.java:88) at com.inductiveautomation.ignition.common.gson.Gson.toJson(Gson.java:842) at com.inductiveautomation.ignition.common.gson.Gson.toJsonTree(Gson.java:712) at com.inductiveautomation.ignition.common.gson.Gson.toJsonTree(Gson.java:689) at com.inductiveautomation.ignition.common.rpc.proto.BuiltinAdapters.fallbackSerializer(BuiltinAdapters.java:395) ... 54 more Ignition v8.3.0 (b2025091510) Java: Azul Systems, Inc. 17.0.16 ``` ---
**Author:** ![dillon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dillon/32/81537_2.png) [@dillon](https://forum.inductiveautomation.com/u/dillon)\ **Post date:** [October 1, 2025, 3:48pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/6 "2025-10-01T15:48:01Z")
> [@cmallonee](#): > > Alternatively, you can manage the same through the UI by clicking the `Scan File System` button on the Projects page Is this new to 8.3? 😱 ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [October 1, 2025, 3:49pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/7 "2025-10-01T15:49:29Z")
Are you committing the `resource.json` file as well? Including updates to it? That error message suggests that the `resource.json` file, which has a manifest of files in it, is pointing to a file, but when we try to retrieve data for that file, there's nothing there. ---
**Author:** ![adrien.couturier](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@adrien.couturier](https://forum.inductiveautomation.com/u/adrien.couturier)\ **Post date:** [October 1, 2025, 4:04pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/8 "2025-10-01T16:04:00Z")
Yes, this is included in my pending changes whenever I make changes to the project. ![resource.json](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/5/9564e650689f77cee7eeceee2540ee9e09121260.png) However, the button `Scan File System Button` resolves this problem. Now my changes are reflected in the main branch 🤔... ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [October 1, 2025, 4:11pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/9 "2025-10-01T16:11:48Z")
> [@adrien.couturier](#): > > Now my changes are reflected in the main branch 🤔... Do you mean "now my changes from the main branch are reflected in Ignition"? That's how it's supposed to work - Ignition isn't watching and reacting to the file system changing underneath it. You must invoke the scan for changes made to the file system to take effect. ---
**Author:** ![adrien.couturier](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@adrien.couturier](https://forum.inductiveautomation.com/u/adrien.couturier)\ **Post date:** [October 1, 2025, 5:31pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/10 "2025-10-01T17:31:15Z")
The changes were initiated in my `develop` branch and committed there. When I switch back to the `main` branch, which has no modifications, even after performing a `Scan File System` The changes from my `develop`branch are still present in the project while on the `main` branch checkout. ---
**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\ **Post date:** [October 1, 2025, 7:39pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/11 "2025-10-01T19:39:58Z")
> [@dillon](#): > > Is this new to 8.3? 😱 Yes. ---
**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\ **Post date:** [October 1, 2025, 7:41pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/12 "2025-10-01T19:41:30Z")
> [@adrien.couturier](#): > > The changes from my `develop`branch are still present in the project while on the `main` branch checkout. If you look at the actual files on disk, do you see the changes from the `develop` branch? ---
**Author:** ![adrien.couturier](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@adrien.couturier](https://forum.inductiveautomation.com/u/adrien.couturier)\ **Post date:** [October 2, 2025, 1:32pm UTC](https://forum.inductiveautomation.com/t/ignition-8-3-project-load-issues-when-switching-git-branches/111132/13 "2025-10-02T13:32:04Z")
My bad. After running more tests, I found that branch switching works perfectly with project modifications. However, you need to press the `Scan File System` button before reopening the Designer. Thank you all for your valuable help.