fix: proxy config reload panic

[monkeyWie]

related: #800

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 58.91%. Comparing base (2523282) to head (1a96ec9).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/base/model.go	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #808      +/-   ##
==========================================
+ Coverage   58.75%   58.91%   +0.15%     
==========================================
  Files          35       35              
  Lines        4459     4464       +5     
==========================================
+ Hits         2620     2630      +10     
+ Misses       1566     1559       -7     
- Partials      273      275       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.