When we use Webots-2019, loading textures fail.

[junjihashimoto]

Hi, when we use Webots-2019, loading textures fail.
Because webots-2019 does not have some assets like textures/road_no_border_line.jpg VerifAI/examples/webots/worlds/shattuck_build.wbt uses.

[dfremont]

As mentioned in the README, we only support Webots 2018. We have explored also supporting Webots 2019, but haven't done this yet since although it is open-source its hardware requirements are much higher than Webots 2018.

The particular errors you are getting are not too hard to fix, if you want to try it yourself:

1. The .wbt file is for Webots 2018, so you have to update it to work with Webots 2019 (you may be able to edit it manually; otherwise you could create a new one using the Webots OSM importer).
2. Switch the Supervisor node to a Robot and set the supervisor field.