blender to unreal light problems with mesh to fix this ? :(

please help me solv this light problem. Its from blender. I know I can chance up the light map resulution way high but I wana know how to solv this problem so I dont have to fix it everytime I import a mesh from blender to unreal …please help :(. I added the screenshoots below so you can se what happening. And its the same if I start a new lever, new map, new lever. All the same. I even blow the harddrive and reinstal the Engines aigan…so why this is happening ? :frowning: