refactoring(logger): better error messages

[rustatian]

Reason for This PR

• Scary error messages w/o real error inside.

Description of Changes

• Remove errors.Op from the Serve

License Acceptance

By submitting this pull request, I confirm that my contribution is made under the terms of the MIT license.

PR Checklist

[Author TODO: Meet these criteria.] [Reviewer TODO: Verify that these criteria are met. Request changes if not]

• [x] All commits in this PR are signed (git commit -s).
• [x] The reason for this PR is clearly provided (issue no. or explanation).
• [x] The description of changes is clear and encompassing.
• [x] Any required documentation changes (code and docs) are included in this PR.
• [x] Any user-facing changes are mentioned in CHANGELOG.md.
• [x] All added/changed functionality is tested.

[codecov[bot]]

Codecov Report

Merging #81 (38c644c) into master (b305fa3) will increase coverage by 0.09%. The diff coverage is 70.00%.

@@            Coverage Diff             @@
##           master      #81      +/-   ##
==========================================
+ Coverage   68.60%   68.69%   +0.09%     
==========================================
  Files         118      118              
  Lines        9925     9967      +42     
==========================================
+ Hits         6809     6847      +38     
- Misses       2443     2448       +5     
+ Partials      673      672       -1     

Impacted Files	Coverage Δ
http/plugin.go	78.07% <12.50%> (-0.08%)	:arrow_down:
http/handler/handler.go	82.59% <61.53%> (-3.31%)	:arrow_down:
config/plugin.go	69.60% <66.66%> (+2.58%)	:arrow_up:
logger/config.go	79.72% <93.93%> (+3.92%)	:arrow_up:
server/plugin.go	65.62% <100.00%> (-0.43%)	:arrow_down:
boltdb/boltjobs/listener.go	58.49% <0.00%> (-2.84%)	:arrow_down:
sqs/item.go	67.10% <0.00%> (+1.31%)	:arrow_up:
websockets/executor/executor.go	68.18% <0.00%> (+5.30%)	:arrow_up:

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