Display error as string but not bytes

[lunny]

As title

[codecov-io]

Codecov Report

Merging #7780 into master will increase coverage by <.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #7780      +/-   ##
==========================================
+ Coverage   41.32%   41.32%   +<.01%     
==========================================
  Files         474      474              
  Lines       63837    63837              
==========================================
+ Hits        26379    26380       +1     
  Misses      34019    34019              
+ Partials     3439     3438       -1

Impacted Files	Coverage Δ
routers/repo/http.go	35.06% <0%> (ø)	⬆️
modules/log/event.go	64.61% <0%> (-1.03%)	⬇️
modules/process/manager.go	81.15% <0%> (+4.34%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 714dcf9...ba7b28d. Read the comment docs.