need help with this error whilst trying to build my game as a html file to export it ,need help with this error when im trying to build my game and export to itch.io

UnityEditor.BuildPlayerWindow+BuildMethodException: 2 errors at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x0027c] in <8f44d91b549e47c9883e180579f26ef6>:0 at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in <8f44d91b549e47c9883e180579f26ef6>:0 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)