Missing data in History Trends

[mchen404]

Bug

Given multiple source directory with their own respective history files
When generating a new report with the source directories
History Trends in the new report has missing data

How to reproduce

Run a test "A" and generate allure output to directory A
Run another test "B" and generate allure output to directory B
Generate report for directory A to GA
Generate report for directory B to GB
Run test "A" again and generate allure output to directory A2
Run test "B" again and generate allure output to directory B2
Copy history folder from directory A to directory A2
Copy history folder from directory B to directory B2
Generate report with directory A2 and B2

Expected behavior

History Trends should have an aggregated result from both tests

Screenshot