I am running the installer from command and I am getting an error while it tried to save to the optional mod list

 

It tries to write to a folder that doesn't exist yet.

 

java -jar forge-1.11-13.19.1.2189-installer.jar.r --installServer

 

Saving optional modlist to: ./mods/mod_list.json
java.io.FileNotFoundException: ./mods/mod_list.json (No such file or directory)
        at java.io.FileOutputStream.open0(Native Method)
        at java.io.FileOutputStream.open(FileOutputStream.java:270)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
        at com.google.common.io.Files$FileByteSink.openStream(Files.java:223)
        at com.google.common.io.Files$FileByteSink.openStream(Files.java:211)
        at com.google.common.io.ByteSink$AsCharSink.openStream(ByteSink.java:136)
        at com.google.common.io.CharSink.write(CharSink.java:86)
        at com.google.common.io.Files.write(Files.java:467)
        at net.minecraftforge.installer.OptionalLibrary.saveModListJson(OptionalLibrary.java:98)
        at net.minecraftforge.installer.ServerInstall.run(ServerInstall.java:97)
        at net.minecraftforge.installer.InstallerAction.run(InstallerAction.java:43)
        at net.minecraftforge.installer.SimpleInstaller.handleOptions(SimpleInstaller.java:72)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:47)
There was an error during server installation

Adding a mods folder fixes the issue but I shouldn't have to

https://github.com/MinecraftForge/Installer/commit/6e7f2037b6b441001e26d3b3a44436c0610a74a9

Fixed, future installers will have the fix.