Fix examples/traces/demo

[Nevay]

Resolves #754.

[codecov]

Codecov Report

Merging #755 (c2c6b81) into main (19e09f5) will not change coverage.
The diff coverage is n/a.

❗ Current head c2c6b81 differs from pull request most recent head 053e785. Consider uploading reports for the commit 053e785 to get more accurate results

@@            Coverage Diff            @@
##               main     #755   +/-   ##
=========================================
  Coverage     82.86%   82.86%           
  Complexity     1295     1295           
=========================================
  Files           150      150           
  Lines          3192     3192           
=========================================
  Hits           2645     2645           
  Misses          547      547           

Flag	Coverage Δ
7.4	82.87% <ø> (ø)
8.0	82.92% <ø> (ø)
8.1	82.92% <ø> (ø)

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