Can you try deleting the contents of "C:\ProgramData\Mount and Blade II Bannerlord\Shaders" and "C:\Program Files (x86)\Steam\steamapps\common\Mount & Blade II Bannerlord\Modules\Native\TileSets\pages" folders and verifying your game files?
If this does not work you can try deleting "steamapps\common\Mount & Blade II Bannerlord\Modules\Native\AssetPackages\gauntlet_ui.tpac" and "\steamapps\common\Mount & Blade II Bannerlord\Modules\SandBox\AssetPackages\gauntlet_ui.tpac" files and try verify again.
