scriptenv?

src/logic/scripting/lua/LuaState.cpp

@@ -348,6 +348,9 @@ int lua::LuaState::createEnvironment(int parent) {
 
 
 void lua::LuaState::removeEnvironment(int id) {
+    if (id == 0) {
+        return;
+    }
     lua_pushnil(L);
     setglobal(envName(id));
 }

src/logic/scripting/lua/libgui.cpp

@@ -341,7 +341,7 @@ static int l_gui_get_env(lua_State* L) {
     if (doc == nullptr) {
         luaL_error(L, "document '%s' not found", name);
     }
-    lua_getglobal(L, lua::LuaState::envName(doc->getEnvironment()).c_str());
+    lua_getglobal(L, lua::LuaState::envName(*doc->getEnvironment()).c_str());
     return 1;
 }