.Net - WindowsBase.pdb not found exception

I have vsix project. Suddenly I am getting different exceptions when I run the project.

Symbol loading skipped: symbol loading for optimized module Microsoft.CodeAnalsis.Workspaces.dll was skipped because Just My Code is enabled. So I unchecked "Just My code" in Debug->Options

Then I got the below exceptions:

1. WindowsBase.pdb contains the debug information required to find the source for the module WindowsBase.dll.

2. Managed Debugging Assistant 'FatalExecutionEngineError' : 'The runtime has encountered a fatal error. The address of the error was at 0x2b5ca08a, on thread 0x2ae0. The error code is 0x80131623. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.'

3. AsyncMethodBuilder.cs not found

Getting different exceptions every time. Below is my Debug options settings. Am I missing something?