Just for the sake of it, here is how it looks when you put an actual history string.
<History>A hoplite (from [font="sans-bold-14"]ta hopla[font="sans-14"] meaning tool or equipment) was the most common type of heavily armed foot-soldier in ancient Greece from the 7th to 4th centuries BCE, and most ordinary citizens of Greek city-states with sufficient means were expected to equip and make themselves available for the role when necessary. Athens had a system of compulsory military service for 18-20-year-olds, but during a war, all male citizens up to the age of 60 could be called up to the armed forces. Other cities across ancient Greece followed a similar policy which meant that hoplites were not professional soldiers and often lacked sufficient military training, although some states did maintain a small elite professional unit, the [font="sans-bold-14"]epilektoi.</History>
From https://www.worldhistory.org/hoplite/
I mean, citizen soldiers, territories, formations, status effects, being free an open source, crossplatform. It's the same genre, but you can't say it's an exact clone. Also, lag & DDOS.
Two things here
Arabic, Hebrew, CJK, Bengali etc require a special font. Currently those are provided as mods. Nothing to do there.
The mod.json error is due to something else and can be fixed. Just have to find how.