Remove thread_local as it causes issues with shared library linking.

CInterface/Core.cpp

@@ -1,3 +1,4 @@
 #include "Core.hpp"
 
+std::string ExceptionHandler::_ArbutilsLastException = "";
 export const char* Arbutils_C_GetLastException() { return ExceptionHandler::GetLastException(); }

CInterface/Core.hpp

@@ -9,7 +9,7 @@
 #define ArbutilsException 3;
 
 class ExceptionHandler {
-    static thread_local std::string _ArbutilsLastException;
+    static std::string _ArbutilsLastException;
 
 public:
     static void SetLastException(const std::exception& e) { _ArbutilsLastException = std::string(e.what()); }