fix rpc server config issue

[lyh169]

• Targeted PR against correct branch (see CONTRIBUTING.md)

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md

• Reviewed Files changed in the github PR explorer

---

For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge PR #XYZ: [title]" (coding standards)

[lyh169]

issue:https://github.com/okx/oec/issues/2191

[codecov-commenter]

Codecov Report

Merging #162 (6e9818a) into dev (ed0f7b3) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

❗ Current head 6e9818a differs from pull request most recent head e5b2831. Consider uploading reports for the commit e5b2831 to get more accurate results

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@@            Coverage Diff             @@
##              dev     #162      +/-   ##
==========================================
- Coverage   34.22%   34.22%   -0.01%     
==========================================
  Files         423      423              
  Lines       44396    44397       +1     
==========================================
  Hits        15193    15193              
- Misses      28094    28095       +1     
  Partials     1109     1109              

Impacted Files	Coverage Δ
app/node_mode.go	8.53% <0.00%> (-0.11%)	⬇️