The error usually indicates that a plugin (DLL file) is trying to load but failing. This happens for three main reasons:
He clicked it.
Reinstall the game (last resort)
Check SKSE Compatibility: Verify that your Skyrim Script Extender (SKSE) version matches your game runtime. You can check your game version by right-clicking SkyrimSE.exe in your game folder, selecting Properties, and looking at the Details tab.
Better approach: Reinstall the exact mod from Nexus Mods, making sure the DLL is placed correctly.