ID 600654 - A "blank error message" occurs when a variable that does not exist is referenced inside a Group

Problem summary:
A "blank error message" occurs when a variable that does not exist is referenced inside a Group
 
Customer reported version:
Nuke N/A
 
Customer reported platform:
Windows 11
 
Steps to reproduce:
1) Download the attached blank_error.nk and specific_error.nk files
2) Launch Nuke and open both files
3) Observe the difference in error messaging, despite both files containing the same problematic lines:

 clone $C7e05f800 {  xpos 562  ypos -626  selected false }

 
Expected behavior:
Nuke should always return a meaningful error message when a file's contents reference non-existent variables.
 
Actual behavior:
If a Group node contains a reference to a variable which does not exist elsewhere inside the .nk Nuke script, a "blank error message" will appear when opening the file and prevent it from loading correctly.
 
Workaround:
No known workaround at this time.
 
Reproduced by Support in:
Nuke 16.0v3 - Windows 11, macOS 14 Sonoma
Nuke 15.0v1 - Windows 11
Nuke 14.0v1 - Windows 11
Nuke 13.0v1 - Windows 11
 
Earliest version tested:
Nuke 13.0v1- This issue appears to be in all tested versions of the product