fix(serveme.tf): don't throw error when the server is already running

[garrappachc]

No description provided.

[codecov]

Codecov Report

Merging #1608 (ace2bc5) into master (9950971) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1608   +/-   ##
=======================================
  Coverage   94.85%   94.85%           
=======================================
  Files         217      217           
  Lines        4217     4217           
  Branches      417      417           
=======================================
  Hits         4000     4000           
  Misses        208      208           
  Partials        9        9           

Impacted Files	Coverage Δ
...ders/serveme-tf/services/serveme-tf-api.service.ts	100.00% <ø> (ø)

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