Are you updating the mod to 0.18? Does anybody else have a fix?

Let me give it a try after work today. I haven't kept up on modding changes in 0.18 but hopefully it's just a version update.

If you want to try yourself in the meantime, replace info.json with this:

{
"name": "heavyfreight",
"version": "0.2.0",
"factorio_version": "0.18",
"title": "Heavy Freight",
"author": "GrimerX",
"description": "Makes trains run slower and consume more fuel.",
"homepage": "n/a",
"date": "6.1.2019",
"dependencies": ["base", "? boblogistics", "? angelsaddons-petrotrain", "? angelsaddons-smeltingtrain", "? cargo-ships", "? Realistic_Electric_Trains"]
}

Updated with basic testing. Let me know if it gives you any troubles.