Can anyone tell me what this error means when opening my sav.dat file on pkhex with a linux computer on wine?

[hari123]

Exception Details:
System.NullReferenceException: Object reference not set to an instance of an object
  at System.Media.SoundPlayer.Stop () [0x00023] in <a53e1eeb99d9433188c674f67e6c16c2>:0 
  at (wrapper remoting-invoke-with-check) System.Media.SoundPlayer.Stop()
  at PKHeX.WinForms.Controls.CryPlayer.Stop () [0x00000] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.SummaryPreviewer.Clear () [0x0000b] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.SlotHoverHandler.Stop () [0x0004d] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.BoxEditor.ResetSlots () [0x00033] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.BoxEditor.GetBox (System.Object sender, System.EventArgs e) [0x0003d] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at System.Windows.Forms.ComboBox.OnSelectedIndexChanged (System.EventArgs e) [0x00027] in <4b7d326f792d4378bd436300c6961411>:0 
  at System.Windows.Forms.ComboBox.set_SelectedIndex (System.Int32 value) [0x000bf] in <4b7d326f792d4378bd436300c6961411>:0 
  at PKHeX.WinForms.Controls.BoxEditor.set_CurrentBox (System.Int32 value) [0x00000] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.BoxEditor.ResetBoxNames (System.Int32 box) [0x0006a] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.BoxEditor.InitializeFromSAV (PKHeX.Core.SaveFile sav) [0x00032] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at (wrapper remoting-invoke-with-check) PKHeX.WinForms.Controls.BoxEditor.InitializeFromSAV(PKHeX.Core.SaveFile)
  at PKHeX.WinForms.Controls.SAVEditor.ToggleViewReset () [0x00076] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Controls.SAVEditor.ToggleInterface () [0x00007] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at (wrapper remoting-invoke-with-check) PKHeX.WinForms.Controls.SAVEditor.ToggleInterface()
  at PKHeX.WinForms.Main.ResetSAVPKMEditors (PKHeX.Core.SaveFile sav) [0x00128] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Main.OpenSAV (PKHeX.Core.SaveFile sav, System.String path) [0x0010c] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Main.LoadFile (System.Object input, System.String path) [0x0005d] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Main.OpenFile (System.Byte[] input, System.String path, System.String ext) [0x00016] in <fc63703d68ed4c58bb809995b749f4f1>:0 
  at PKHeX.WinForms.Main.OpenFromPath (System.String path) [0x00123] in <fc63703d68ed4c58bb809995b749f4f1>:0 

Loaded Assemblies:
--------------------
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\windows\mono\mono-2.0\lib\mono\4.5\mscorlib.dll

PKHeX, Version=21.5.21.0, Culture=neutral, PublicKeyToken=null
Z:\home\study\.cache\.fr-MUo2J5\PKHeX.exe

System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\windows\mono\mono-2.0\lib\mono\gac\System.Windows.Forms\4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll

System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\windows\mono\mono-2.0\lib\mono\gac\System\4.0.0.0__b77a5c561934e089\System.dll

System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\gac\System.Drawing\4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll

Accessibility, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\gac\Accessibility\4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll

PKHeX.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\gac\System.Configuration\4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll

System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\windows\mono\mono-2.0\lib\mono\gac\System.Core\4.0.0.0__b77a5c561934e089\System.Core.dll

System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51

System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\4.5\Facades\System.Runtime.dll

System.Resources.ResourceManager, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\4.5\Facades\System.Resources.ResourceManager.dll

System.Runtime.InteropServices, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\4.5\Facades\System.Runtime.InteropServices.dll

System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a

System.Reflection, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\windows\mono\mono-2.0\lib\mono\4.5\Facades\System.Reflection.dll

Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed

PKHeX.Drawing, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

Mono.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756
C:\windows\mono\mono-2.0\lib\mono\gac\Mono.Security\4.0.0.0__0738eb9f132ed756\Mono.Security.dll

System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\windows\mono\mono-2.0\lib\mono\gac\System.Xml\4.0.0.0__b77a5c561934e089\System.Xml.dll

System.Numerics, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\windows\mono\mono-2.0\lib\mono\gac\System.Numerics\4.0.0.0__b77a5c561934e089\System.Numerics.dll

--------------------
User Message:
Unable to load file.
Path: C:\users\study\Downloads\sav.dat