[#1459][FOLLOWUP] fix(server): Fix the issue of log variable printing

[rickyma]

What changes were proposed in this pull request?

Fix the issue of log variable printing.

Why are the changes needed?

A follow-up PR for: #1461.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Unnecessary.

[github-actions]

Test Results

 2 363 files  ±0   2 363 suites  ±0   4h 30m 35s ⏱️ +9s
   912 tests ±0     911 ✅ ±0   1 💤 ±0  0 ❌ ±0 
10 585 runs  ±0  10 571 ✅ ±0  14 💤 ±0  0 ❌ ±0 

Results for commit 965ea49. ± Comparison against base commit 6ea4300.

[jerqi]

@rickyma Could you raise a pull request for branch 0.9? There are some conflicts so I can't cherry-pick this to branch 0.9 directly.

[rickyma]

@rickyma Could you raise a pull request for branch 0.9? There are some conflicts so I can't cherry-pick this to branch 0.9 directly.

I think we also need this #1643. I've put them together.
Done by #1672.