Problem with the new unity version and steam vr

Hi, so i was developing a program using unity 2018.2.15 and for some stupid reason decided to update to latest unity version 2018.3.1f1 and now im getting three distinct error i cant fix on my own because i got no clue where they came from or whats causing them. Googling resulted in similar issues 2 years ago but the problem then was with the build, its similar here i dont get openvr_api.dll when i build and the errors show up in the console when im in unity but adding the file to a build version doesnt help me as i need it to work on the program in unity. Id really like to know whats going on and how to fix this.
The console spits out:

DllNotFoundException: openvr_api
Valve.VR.OpenVR.GetInitToken () (at Assets/SteamVR/Plugins/openvr_api.cs:5527)
Valve.VR.OpenVR+COpenVRContext.CheckClear () (at Assets/SteamVR/Plugins/openvr_api.cs:5777)
Valve.VR.OpenVR+COpenVRContext.VRScreenshots () (at Assets/SteamVR/Plugins/openvr_api.cs:5903)
Valve.VR.OpenVR.get_Screenshots () (at Assets/SteamVR/Plugins/openvr_api.cs:5988)
Valve.VR.SteamVR_Render.OnEnable () (at Assets/SteamVR/Scripts/SteamVR_Render.cs:253)

DllNotFoundException: openvr_api
Valve.VR.OpenVR.GetInitToken () (at Assets/SteamVR/Plugins/openvr_api.cs:5527)
Valve.VR.OpenVR+COpenVRContext.CheckClear () (at Assets/SteamVR/Plugins/openvr_api.cs:5777)
Valve.VR.OpenVR+COpenVRContext.VRChaperone () (at Assets/SteamVR/Plugins/openvr_api.cs:5799)
Valve.VR.OpenVR.get_Chaperone () (at Assets/SteamVR/Plugins/openvr_api.cs:5980)
Valve.VR.InteractionSystem.ChaperoneInfo+c__Iterator0.MoveNext () (at Assets/SteamVR/InteractionSystem/Teleport/Scripts/ChaperoneInfo.cs:57)
UnityEngine.SetupCoroutine.InvokeMoveNext (IEnumerator enumerator, IntPtr returnValueAddress) (at C:/buildslave/unity/build/Runtime/Export/Coroutines.cs:17)’

DllNotFoundException: openvr_api
Valve.VR.OpenVR.GetInitToken () (at Assets/SteamVR/Plugins/openvr_api.cs:5527)
Valve.VR.OpenVR+COpenVRContext.CheckClear () (at Assets/SteamVR/Plugins/openvr_api.cs:5777)
Valve.VR.OpenVR+COpenVRContext.VRCompositor () (at Assets/SteamVR/Plugins/openvr_api.cs:5825)
Valve.VR.OpenVR.get_Compositor () (at Assets/SteamVR/Plugins/openvr_api.cs:5982)
Valve.VR.SteamVR_Render+c__Iterator0.MoveNext () (at Assets/SteamVR/Scripts/SteamVR_Render.cs:133)
UnityEngine.SetupCoroutine.InvokeMoveNext (IEnumerator enumerator, IntPtr returnValueAddress) (at C:/buildslave/unity/build/Runtime/Export/Coroutines.cs:17)

Dont know if it belongs in the unity domain or the steam vr domain so ive asked in both, really need to find a solution to this fast so i can work on my program again.
BR

You should reimport the steamvr plugin

that i already did and i redid it again today but it changes nothing