Pictures are not loaded on this website, even with Brave shields down: https://www.bioinformaticsalgorithms.org/bioinformatics-chapter-7
The pictures correctly load in Chrome for me.
On the console I can find multiple failed calls:
Failed to load resource: net::ERR_CONNECTION_TIMED_OUT
nonadditive_distance_matrix.png:1 Failed to load resource: net::ERR_CONNECTION_TIMED_OUT
nonadditive_distance_matrix.png:1 Failed to load resource: net::ERR_CONNECTION_TIMED_OUT
Version: Version 1.7.98 Chromium: 81.0.4044.113 (Official Build) (64-bit)
Additional Information: