[BugFix: ZSTACK-43465] cherry-pick from da6d7f5c3b4383b130bb1ff219d452adf4f251d5 fix load json string error.
[BugFix: ZSTACK-43465]
cherry-pick from da6d7f5c3b4383b130bb1ff219d452adf4f251d5
fix load json string error.

zstackio/zstack-utility,zstackio/zstack-utility,zstackio/zstack-utility