When running on a world from 1.11.0 mcpe_viz seg faults.

Output, for what it's worth, is:

mcpe_viz v0.0.48 by Plethora777
Reading XML from /home/paul/.mcpe_viz/mcpe_viz.xml
Reading config from /home/paul/.mcpe_viz/mcpe_viz.cfg
parseLevelFile: name=/opt/shared/nMG0XAqiAAA=//level.dat version=8 len=1980
Found World Spawn: x=672 y=32767 z=4
Level name is [Kirstineland]
DB Open: dir=/opt/shared/nMG0XAqiAAA=/
DB Open Status: OK (block_size=4096 bloom_filter_bits=10)
Scan keys to get world boundaries
./mcpe: line 1: 21543 Segmentation fault (core dumped) ~/mcpe_viz/build/mcpe_viz --db /opt/shared/nMG0XAqiAAA=/ --out /opt/shared/mcpe/kirstineland --html-most --biome --no-force-geojson