*Updated Steps*

*Reproducible on:*
* VS version: 1.6.1
* Unity version: 2021.1.13f1

*Steps To Reproduce:*
# Download the Unity project "ErrorIssue.zip"
# Open it using Editor 2020.3
# If the Bolt version is not 1.4.15 Upgrade to it
# Close the project and Open it using Editor 2021.1.13f1
# From the package manager upgrade to Visual Scripting 1.6.1 and wait until the migrations finishes
# Open "Spezi_MainMenue.unity" Scene
# "Build And Run" to WebGL

*Outcome Results:*
* Build fails
* Errors related to IL2CPP appear in the console
{code:java}
"Exception: IL2CPP error for method 'System.Void Bolt.UnityMessageListener::AddGUIListeners()'"
{code}

*Expected Results:*
* No errors related to VS should appear in the console and the build should succed

---------------------------------------------------------------------------
*Original Steps*

How to reproduce:
1. Download the Unity project "ErrorIssue.zip"
2. Open "Spezi_MainMenue.unity" Scene
3. Build And Run to WebGL
4. Observe Console window

Expected result: No errors in the Console log and build is successful
Actual result: "Exception: IL2CPP error for method 'System.Void Bolt.UnityMessageListener::AddGUIListeners()'" error message is thrown and the build stops

Reproducible with: 1.4.15 (2021.1.0a10, 2021.2.0a19)
Not reproducible with: 1.4.15 (2019.4.26f1, 2020.3.11f1, 2021.1.0a1)

Can't test with: 2018.4.35f1 (Project breaks), 2021.1.0a2-2021.1.0a9 (Due to Console errors)

Notes:
- The issue is reproducible when building for WebGL
- This error is reproducible with Android build with IL2CPP and .NET 4.X
- The issue is not reproducible when building Windows standalone with IL2CPP