[ISSUE] FreeCAD does not launch: "Fatal Error compiling builtin function"

[voidlinux-github@inbox.vuxu.org]

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New issue by jorgenatz on void-packages repository

https://github.com/void-linux/void-packages/issues/12595
Description: ### System

* xuname:  
  Void 4.19.48_1 x86_64-musl GenuineIntel notuptodate rF
* package:  
  freecad

### Expected behavior
When 
`$  FreeCAD`
is typed, I had expected the program to start as normal, showing a splash screen until subsequently opening a window.

### Actual behavior
When running, this error is produced:
```
Error compiling builtin: 
Fatal error compiling builtin function 'apply': Program received signal SIGSEGV, Segmentation fault.
sorry, no backtrace on musl libc
```
The startup splash screen is shown with a variety of intialization messages before the crash.

This is the entire output:
```
FreeCAD 0.18.2, Libs: 0.18.2R1_voidlinux
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2019
  #####                 ####  ###   ####  
  #                    #      # #   #   # 
  #     ##  #### ####  #     #   #  #   # 
  ####  # # #  # #  #  #     #####  #   # 
  #     #   #### ####  #    #     # #   # 
  #     #   #    #     #    #     # #   #  ##  ##  ##
  #     #   #### ####   ### #     # ####   ##  ##  ##

Error compiling builtin: 
Fatal error compiling builtin function 'apply': Program received signal SIGSEGV, Segmentation fault.
sorry, no backtrace on musl libc
```
### Steps to reproduce the behavior
Simply launch FreeCAD from a terminal or graphical menu.


It seems that this may be linked to QtWebKt, as indicated by this similar issue: [https://github.com/annulen/webkit/issues/708](https://github.com/annulen/webkit/issues/708)


If I have forgotten to include anything, please let me know, and thank you for reading.