fix: promise leak

[alexruzenhack]

Acceptance Criteria

• Fix promise leak in call of getTokenDetails

Note

We have had a similar problem before, see #584.

Security Checklist

• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.43%. Comparing base (420d258) to head (c2522be).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #772      +/-   ##
==========================================
- Coverage   80.45%   80.43%   -0.02%     
==========================================
  Files          79       79              
  Lines        6333     6333              
  Branches     1379     1370       -9     
==========================================
- Hits         5095     5094       -1     
- Misses       1226     1227       +1     
  Partials       12       12              

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