No symbol in libQt6JsonRpc.a

Description:

I want to build qt6-declarative with qmlls support, but got the link error.
I found that there is no symbol in libQt6JsonRpc.a.

Additional info:

• package version(s): 6.8.0-1
• config and/or log files:
• link to upstream bug report, if any: https://github.com/qt/qtlanguageserver/commit/1a9a75cacaf4c45fc399915804f7f25d17747343

Steps to reproduce:

objdump -t /usr/lib/libQt6JsonRpc.a

Result:

...
qtypedjson.cpp.o:     file format elf64-x86-64

SYMBOL TABLE:
0000000000000001       O *COM*  0000000000000001 __gnu_lto_slim