求解，有人知道这个错误是为啥吗

NullReferenceException: Object reference not set to an instance of an object

UnityEditor.Scripting.Compilers.ScriptCompilerBase.CompilationHadFailure () (at C:/buildslave/unity/build/Editor/Mono/Scripting/Compilers/ScriptCompilerBase.cs:340)

UnityEditor.Scripting.Compilers.ScriptCompilerBase.DumpStreamOutputToLog () (at C:/buildslave/unity/build/Editor/Mono/Scripting/Compilers/ScriptCompilerBase.cs:354)

UnityEditor.Scripting.Compilers.ScriptCompilerBase.GetCompilerMessages () (at C:/buildslave/unity/build/Editor/Mono/Scripting/Compilers/ScriptCompilerBase.cs:333)

UnityEditor.Scripting.ScriptCompilation.CompilationTask.Poll () (at C:/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/CompilationTask.cs:105)

UnityEditor.Scripting.ScriptCompilation.EditorCompilation.PollCompilation () (at C:/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilation.cs:1136)

UnityEditor.Scripting.ScriptCompilation.EditorCompilation.TickCompilationPipeline (EditorScriptCompilationOptions options, BuildTargetGroup platformGroup, BuildTarget platform) (at C:/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilation.cs:1129)

UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface+<TickCompilationPipeline>c__AnonStorey3.<>m__0 () (at C:/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:272)

UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface.EmitExceptionAsError[CompileStatus] (System.Func`1 func, CompileStatus returnValue) (at C:/buildslave/unity/build/Editor/Mono/Scripting/ScriptCompilation/EditorCompilationInterface.cs:85)

UnityEditor.Scripting.ScriptCompilation.EditorCompilationInterface:TickCompilationPipeline(EditorScriptCompilationOptions, BuildTargetGroup, BuildTarget)