Address notices reported by latest PHPUnit

[acelaya]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.84%. Comparing base (daf608e) to head (08a3bf9).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #75      +/-   ##
============================================
+ Coverage     96.45%   97.84%   +1.38%     
+ Complexity       50       49       -1     
============================================
  Files            13       13              
  Lines           141      139       -2     
============================================
  Hits            136      136              
+ Misses            5        3       -2     

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