Launching game fails

Hello! So I’m working on an update for a previously released game developed entirely with Blueprint. The release build worked fine and as intended, also on 4.26.

However, I’m now ready to build and release this update, and the build is failing. Looking at the log, the error I see at the end is this:

UnrealBuildTool.Main: CompilationResultException: Error: OtherCompilationError
UnrealBuildTool.Main:    at UnrealBuildTool.ActionGraph.ExecuteActions(BuildConfiguration BuildConfiguration, List`1 ActionsToExecute) in D:\Build\++UE4\Sync\Engine\Source\Programs\UnrealBuildTool\System\ActionGraph.cs:line 230
UnrealBuildTool.Main:    at UnrealBuildTool.BuildMode.Build(TargetMakefile[] Makefiles, List`1 TargetDescriptors, BuildConfiguration BuildConfiguration, ISourceFileWorkingSet WorkingSet, BuildOptions Options, FileReference WriteOutdatedActionsFile) in D:\Build\++UE4\Sync\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 483
UnrealBuildTool.Main:    at UnrealBuildTool.BuildMode.Execute(CommandLineArguments Arguments) in D:\Build\++UE4\Sync\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 226
UnrealBuildTool.Main:    at UnrealBuildTool.UnrealBuildTool.Main(String[] ArgumentsArray) in D:\Build\++UE4\Sync\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 550

I don’t know what this means, and I haven’t messed with build configurations or anything. This is the same launch profile that the release version had, with no other changes. Does anyone know how I can fix this? Thank you!

If anyone could help with this, that’d be great. I’ve already missed the release date I’d set for this update because of this issue.