TextMesh Pro Getting error message MissingReferenceException: The object of type 'Material' has been destroyed

MissingReferenceException: The object of type 'Material' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
TMPro.TextMeshProUGUI.GenerateTextMesh () (at Library/PackageCache/com.unity.textmeshpro@1.4.1/Scripts/Runtime/TMPro_UGUI_Private.cs:2098)
TMPro.TextMeshProUGUI.OnPreRenderCanvas () (at Library/PackageCache/com.unity.textmeshpro@1.4.1/Scripts/Runtime/TMPro_UGUI_Private.cs:1657)
TMPro.TextMeshProUGUI.Rebuild (UnityEngine.UI.CanvasUpdate update) (at Library/PackageCache/com.unity.textmeshpro@1.4.1/Scripts/Runtime/TextMeshProUGUI.cs:209)
UnityEngine.UI.CanvasUpdateRegistry.PerformUpdate () (at /Users/builduser/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/CanvasUpdateRegistry.cs:198)
UnityEngine.UI.ScrollRect:LateUpdate()


Hi, I am using Unity2018.4.4

I have a (Text (TMP) game object) with this text written below

• Allows after market stereo to be installed in factory location

The above text creates a child with TMP SubMeshUI [LiberationSans SDF Material] component. Which throughs the error "'Material' has been destroyed".

The error comes after I close the play mode.

 

The same issue on Unity 2019.4.10f1 with TextMeshPro 2.1.3

Code (CSharp):

1. MissingReferenceException: The object of type 'Material' has been destroyed but you are still trying to access it.
2. Your script should either check if it is null or you should not destroy the object.
3. UnityEngine.Object.get_name () (at <ee47be73f7ef409ca5e5ce4b121745b7>:0)
4. TMPro.TMP_SubMeshUI.AddSubTextObject (TMPro.TextMeshProUGUI textComponent, TMPro.MaterialReference materialReference) (at Library/PackageCache/com.unity.textmeshpro@2.1.3/Scripts/Runtime/TMP_SubMeshUI.cs:214)
5. TMPro.TextMeshProUGUI.SetArraySizes (TMPro.TMP_Text+UnicodeChar[] unicodeChars) (at Library/PackageCache/com.unity.textmeshpro@2.1.3/Scripts/Runtime/TMPro_UGUI_Private.cs:1383)
6. TMPro.TMP_Text.ParseInputText () (at Library/PackageCache/com.unity.textmeshpro@2.1.3/Scripts/Runtime/TMP_Text.cs:1892)
7. TMPro.TextMeshProUGUI.OnPreRenderCanvas () (at Library/PackageCache/com.unity.textmeshpro@2.1.3/Scripts/Runtime/TMPro_UGUI_Private.cs:1622)
8. TMPro.TextMeshProUGUI.Rebuild (UnityEngine.UI.CanvasUpdate update) (at Library/PackageCache/com.unity.textmeshpro@2.1.3/Scripts/Runtime/TextMeshProUGUI.cs:224)
9. UnityEngine.UI.CanvasUpdateRegistry.PerformUpdate () (at C:/Program Files/Unity/Hub/Editor/2019.4.10f1/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/UI/Core/CanvasUpdateRegistry.cs:210)
10. UnityEngine.UI.ScrollRect:LateUpdate() (at C:/Program Files/Unity/Hub/Editor/2019.4.10f1/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/UI/Core/ScrollRect.cs:805)

 

After reimporting the project I couldn't reproduce the bug

 

im having the same problem

 

Any solutions? I'm having the issue on Unity version 2021.3.8f1

 

Happening with 2021.3.10 as well

 

Got it on 2022.1.10f1 with TMP 3.0.6.

I'm defining a prefab (variant) with TMP text on it, which auto-generates TMP SubMeshUI [LiberationSans SDF Material] child (although I'm using a different font), and the prefab instance sometimes creates its own child too, sometimes has no children at all (not sure how it's possible, it manages to bypass "prefab permissions" and delete/replace a prefab child?).

 

Happens for me as well on 2021.3.6f1 LTS and TMP 3.0.6.
It happens only with a "Bitmap Custom Atlas" shader that a submesh is created and it gets deleted after exiting play mode. If I deactivate the TextMeshPro object then in the editor and reactivate it, the submesh gets created anew.