Pasting schematic into the world on the server will not summon entities and /summon commands will be not executed with an error like this:

This error occurs if the system language is set to one that does not use a point (full stop) as a decimal separator, but Minecraft server always expects a decimal point regardless of the system language.
For example, this is what Litematica sends if system system language is set to Russian:
/summon minecraft:hopper_minecart 12,500000 40,000000 99,500000
but it is supposed to send this:
/summon minecraft:hopper_minecart 12.500000 40.000000 99.500000

idk if it is possible to make formatter ignore system language and always use point as decimal separator

There are now fixed builds for 1.14.4 (and LiteLoader 1.12.0 and 1.12.2) here: https://masa.dy.fi/tmp/minecraft/mods/client_mods/?mcver=1.14.4

I'll leave the 1.13.2 fix for later, it will happen when I next merge the 1.12 code to 1.13.2.

@BerdinskiyBear which version are you using of litematica and minecraft?
does it work if you use it in english?

Yes that will be an easy fix, those are just easy to miss/forget when first implementing things... Which Minecraft version are you on? Or I guess I should do quick temporary bugfixes for this on all versions, even though the "final fix" needs to be in 1.12 and will get merged forward when I have the time to do the next merges from 1.12 to 1.13.2 and then to 1.14.4

@vacla, yes, this feature works if system language is set to English

@maruohon, I am using 1.14.4 but I have been experiencing this issue on all versions since 1.13.2