Missing resources in serenity-report-resources

[pogodins]

Some resources are missing in the report:

• chartist-plugin-tooltip.min.css which is referred by serenity-report-resources/src/main/resources/freemarker/libraries/chartist.ftl
• sort_both.png and sort_asc.png which are referred by serenity-report-resources/src/main/resources/report-resources/datatables/1.10.19/datatables.min.css

These missing reports are causing 404 errors in Network tab and Refused to apply style from 'http://localhost:63343/backend-test-framework/target/site/serenity/chartist/chartist-plugin-tooltip/dist/chartist-plugin-tooltip.min.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled..

However, I don't see any problems with the report. Maybe these resources should not be referred at all?
Please refer to the screenshots taken from the report generated using Serenity v2.1.6:

Chartist plugin looks to be affected by this change: a6db71a#diff-562a606db675299a988b8e34aa07c9e7.
For sorting images, I can't find any appearance. Maybe they weren't ever present in the repo?