MRQ rendering crashes when there is an empty audio track

1. Create a new level sequence.
2. Add an audio track to it.
3. Open the Movie Render Queue.
4. Add .wav audio to the MRQ export settings.
5. Run Render (Remote).

Expected Result:
The render runs without crashing

Actual Result:
Crash occurs after rendering

=== Critical error: ===

Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 1078] 
Array index out of bounds: 0 into an array of size 0

[Callstack] 0x00007ffbad7c2378 UnrealEditor-Core.dll!FDebug::CheckVerifyFailedImpl2() [D:\p4\main\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:745]
[Callstack] 0x00007ffb46bd9835 UnrealEditor-MovieRenderPipelineRenderPasses.dll!UMoviePipelineWaveOutput::BeginFinalizeImpl() [D:\p4\main\Engine\Plugins\MovieScene\MovieRenderPipeline\Source\MovieRenderPipelineRenderPasses\Private\MoviePipelineWaveOutput.cpp:149]
[Callstack] 0x00007ffb475418bf UnrealEditor-MovieRenderPipelineCore.dll!UMoviePipeline::BeginFinalize() [D:\p4\main\Engine\Plugins\MovieScene\MovieRenderPipeline\Source\MovieRenderPipelineCore\Private\MoviePipeline.cpp:690]
[Callstack] 0x00007ffb4758710a UnrealEditor-MovieRenderPipelineCore.dll!UMoviePipeline::TransitionToState() [D:\p4\main\Engine\Plugins\MovieScene\MovieRenderPipeline\Source\MovieRenderPipelineCore\Private\MoviePipeline.cpp:491]
[Callstack] 0x00007ffb4758623a UnrealEditor-MovieRenderPipelineCore.dll!UMoviePipeline::TeardownShot() [D:\p4\main\Engine\Plugins\MovieScene\MovieRenderPipeline\Source\MovieRenderPipelineCore\Private\MoviePipeline.cpp:1125]
[Callstack] 0x00007ffb475eea99 UnrealEditor-MovieRenderPipelineCore.dll!UMoviePipeline::TickProducingFrames() [D:\p4\main\Engine\Plugins\MovieScene\MovieRenderPipeline\Source\MovieRenderPipelineCore\Private\MoviePipelineTiming.cpp:704]
[Callstack] 0x00007ffb47572996 UnrealEditor-MovieRenderPipelineCore.dll!UMoviePipeline::OnEngineTickBeginFrame() [D:\p4\main\Engine\Plugins\MovieScene\MovieRenderPipeline\Source\MovieRenderPipelineCore\Private\MoviePipeline.cpp:609]
[Callstack] 0x00007ffb4754d074 UnrealEditor-MovieRenderPipelineCore.dll!TBaseUObjectMethodDelegateInstance<0,UMoviePipeline,void __cdecl(void),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\p4\main\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:688]
[Callstack] 0x00007ff6275485c1 UnrealEditor-Cmd.exe!TMulticastDelegate<void __cdecl(void),FDefaultDelegateUserPolicy>::Broadcast() [D:\p4\main\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl:1074]
[Callstack] 0x00007ff627533b71 UnrealEditor-Cmd.exe!FEngineLoop::Tick() [D:\p4\main\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5596]
[Callstack] 0x00007ff627550a4f UnrealEditor-Cmd.exe!GuardedMain() [D:\p4\main\Engine\Source\Runtime\Launch\Private\Launch.cpp:187]
[Callstack] 0x00007ff627550b5a UnrealEditor-Cmd.exe!GuardedMainWrapper() [D:\p4\main\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:123]
[Callstack] 0x00007ff62755441e UnrealEditor-Cmd.exe!LaunchWindowsStartup() [D:\p4\main\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:277]
[Callstack] 0x00007ff627565784 UnrealEditor-Cmd.exe!WinMain() [D:\p4\main\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:334]
[Callstack] 0x00007ff627567e4e UnrealEditor-Cmd.exe!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
[Callstack] 0x00007ffcae1ce8d7 KERNEL32.DLL!UnknownFunction []