MultiOutSynthTutorial.vst3 crashes

I recently started learning how to develop VST plugins using JUCE. After successfully going through some tutorials, I am now stuck on the Multi Out Synth Tutorial. The standalone works perfectly. However, after pressing “Build All” in Visual Studio 2019, and taking the file “MultiOutSynthTutorial.vst3” from “MultiOutSynthTutorial\Builds\VisualStudio2019\x64\Debug\VST3”, it seems to crash. I have tried the VST3PluginTestHost from Steinberg, which gives the error: “A serious problem has occurred: Please try to save your project under another name and then restart VST3PluginTestHost.exe.” upon selecting the MultiOutSynthTutorial. Similarly, REAPER gives the error: “Plug-in ‘MultiOutSynthTutorial.vst3’ executed invalid operation during scanning.” upon startup. The crash dump from VST3PluginTestHost is as follows:

===================================================================
VST3PluginTestHost.exe 3.0.0 Build 31 - 14.12.2020 19:37
-------------------------------------------------------------------
Timestamp is 5fa4f860 (Fri Nov  6 02:16:48 2020)
C:\Program Files\Steinberg\VST3PluginTestHost\VST3PluginTestHost.exe
-------------------------------------------------------------------
Exception code: C0000005 ACCESS_VIOLATION
Fault address:  E22E5FD8 01:00674FD8 C:\Program Files\Common Files\VST3\MultiOutSynthTutorial.vst3Bytes at CS:EIP:
f2 0f 10 41 08 f2 0f 11 40 28 48 8b 44 24 70 48
83 c0 30 48 8b 94 24 88 00 00 00 48 8b c8 e8 97

I am on Windows 10. If any additional information is required, I can provide it.