Add log when occured license operation error

[Linary]

Change-Id: I067b9c21747902ca0f78b1508b4b9ce7b0b2265e

[codecov]

Codecov Report

Merging #1522 (8efa65d) into master (f22d03f) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff            @@
##             master    #1522   +/-   ##
=========================================
  Coverage     59.66%   59.66%           
- Complexity     6150     6152    +2     
=========================================
  Files           410      410           
  Lines         33255    33260    +5     
  Branches       4591     4591           
=========================================
+ Hits          19843    19846    +3     
- Misses        11336    11340    +4     
+ Partials       2076     2074    -2     

Impacted Files	Coverage Δ
...a/com/baidu/hugegraph/license/LicenseVerifier.java	0.00% <0.00%> (ø)
.../baidu/hugegraph/license/LicenseVerifyManager.java	0.00% <0.00%> (ø)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	81.27% <0.00%> (+0.23%)	⬆️
...c/main/java/com/baidu/hugegraph/task/HugeTask.java	72.00% <0.00%> (+0.30%)	⬆️

---

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 f22d03f...8efa65d. Read the comment docs.