Unloading broken assembly error on MySQL.data.dll after upgrading to 2018.1

Project was working fine in 2017.4.2
Upgraded to 2018.1 and received the following error

"Unloading broken assembly Assets/Plugins/MySQL_Connector/MySql.Data.dll, this assembly can cause crashes in the runtime"

Same error even in empty project with just MySQL.Data.dll.
Any idea how to resolve this?

Setting Details
OS: Win 10 Pro x64
Unity Ver: 2018.1
Platform: Android
Min Android API Level: 7.0
MySQL .NET Connector Ver: 8.0.11
Scripting Runtime: .NET 4.x Equivalent
Scripting Backend: IL2CPP
API Compatibility Level: .NET 4.x

PS: Before any one says it, Yes, I know direct DB Connections are unsafe and I know I should switch to an intermediary like Server/PHP etc etc. Unfortunately for the requirements for this particular project are as such hence I need to get this working.

 

Any one have any idea how to resolve this?

 

I have the similar problem after update to unity3D 2018.1 (worked on unity3D 5.6):
Unloading broken assembly Assets/Plugins/Npgsql.dll, this assembly can cause crashes in the runtime
in Editor mode

Environment:
Unity 2018.1.1f1, Visual Studio Community 2017 with Tools for Unity, running in Windows 10 updated abr/2018;
API NET 4.x; scripting backend Mono

Use NuGet Packet Manager to add npgsql 3.2.7 and system.threading.tasks.extensions.4.3.0
Copy npgsql 3.2.7 dll to

C:\Program Files\Unity2017\Editor\Data\Mono\lib\mono\2.0\Npgsql.dll
<ProjectPath>\Assets\Plugins
<ProjectPath>\Library\PlayerDataCache\Data\Managed
​

Anyone have suggestions to fix this?
Thanks in advance

 

I copy system.threading.tasks.extensions.dll to the same places than npgsql.dll and do not receive the message anymore.