Build Problem :(

I have this Errors how to fix it?

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

Refresh, detecting if any assets need to be imported or removed … 0.002119 seconds (Nothing changed)
MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

Refresh, detecting if any assets need to be imported or removed … 0.002648 seconds (Nothing changed)
MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

Refresh, detecting if any assets need to be imported or removed … 0.001573 seconds (Nothing changed)
MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

Refresh, detecting if any assets need to be imported or removed … 0.001311 seconds (Nothing changed)
MissingMethodException: Cannot find the requested method.
at (wrapper managed-to-native) UnityEditor.Unsupported:IsBleedingEdgeBuild ()

at UnityEditor.AppStatusBar.OnGUI () [0x002b2] in C:\BuildAgent\work\14194e8ce88cdf47\Editor\Mono\GUI\AppStatusBar.cs:117

(Filename: C:/BuildAgent/work/14194e8ce88cdf47/Editor/Mono/GUI/AppStatusBar.cs Line: 117)

I also met this problem.But We are programmer!So,I found that I didn’t install .NET 3.5!(Maybe you need another version).Wish to help. forgive my poor English。。。