I don't know what causes this crash, but my mods.toml fully corresponds to documentation on official forge documentation. My mod crashes after updating forge from 28.1.X to 28.2.0. I also checked existing mods.toml in bundle. 

 

Super short stacktrace:

[1;31m[20:40:59] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception
net.minecraftforge.fml.LoadingFailedException: Loading errors encountered: [
        mods.toml missing metadata for modid project_essentials_cooldown,
        mods.toml missing metadata for modid project_essentials_permissions
]
        at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:179) ~[?:?] {re:classloading}
        at net.minecraftforge.fml.server.ServerModLoader.begin(ServerModLoader.java:45) ~[?:?] {re:classloading}

 

and short stacktrace from client:

 

[20Mar2020 20:33:35.073] [Client thread/FATAL] [net.minecraftforge.fml.ModLoader/CORE]: Failed to initialize mod containers
net.minecraftforge.fml.ModLoadingException: mods.toml missing metadata for modid project_essentials_cooldown
	at net.minecraftforge.fml.ModLoader.lambda$buildModContainerFromTOML$29(ModLoader.java:233) ~[?:?]
	at net.minecraftforge.fml.ModLoader$$Lambda$2110/542220524.get(Unknown Source) ~[?:?]
	at java.util.Optional.orElseThrow(Optional.java:290) ~[?:1.8.0_51]
	at net.minecraftforge.fml.ModLoader.buildModContainerFromTOML(ModLoader.java:233) ~[?:?]

 

mods.toml:

 

modLoader="javafml"
loaderVersion="[28,)"
issueTrackerURL="https://github.com/ProjectEssentials/ProjectEssentials-Permissions/issues"

[[mods]]
    modId="project_essentials_permissions"
    version="1.14.4-1.2.1"
    displayName="Project Essentials Permissions"
    updateJSONURL="https://raw.githubusercontent.com/ProjectEssentials/ProjectEssentials-Permissions/MC-1.14.X/update.json"
    displayURL="https://github.com/ProjectEssentials/ProjectEssentials-Permissions"
    credits="Thanks JetBrains for Intellij IDEA license!"
    authors="MairwunNx (Pavel Erokhin)"
    description='''
    Project Essentials Permissions - additional module for Essentials;
    Just controlling player permissions.

    Also it just permission API for forge.
    '''

[[dependencies.project_essentials_permissions]]
    modId="project_essentials_core"
    mandatory=true
    versionRange="[1,)"
    ordering="NONE"
    side="BOTH"

[[dependencies.project_essentials_permissions]]
    modId="forge"
    mandatory=true
    versionRange="[28,)"
    ordering="NONE"
    side="BOTH"

[[dependencies.project_essentials_permissions]]
    modId="minecraft"
    mandatory=true
    versionRange="[1.14.4]"
    ordering="NONE"
    side="BOTH"

 

Closed. Not forge bug. Version targeting mismatch.