Add callback validation in error page

[chashikajw]

Purpose

$Subject

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 24.30%. Comparing base (cbefc8a) to head (32b7e01).
Report is 6 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #13429      +/-   ##
============================================
+ Coverage     23.23%   24.30%   +1.07%     
- Complexity     1172     1240      +68     
============================================
  Files           254      254              
  Lines         11489    11489              
  Branches       1200     1200              
============================================
+ Hits           2669     2792     +123     
+ Misses         8794     8670     -124     
- Partials         26       27       +1     

Flag	Coverage Δ
integration_tests	24.30% <ø> (+1.07%)	⬆️

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