Fixed: hard blockers on market buys/sells/orders when unit price or totals are zero/negative; cache and price calculator now auto-heal corrupt prices back to safe base values so items can’t be bought for free.
Improved: economy operations now require strictly positive amounts, tightening validation across transfers/debits.
Compatibility: Java 17+, Spigot/Paper/Purpur/Folia 1.19.4–1.21.9+ (no API changes).
Update: build or download EcoXpert-1.2.2.jar, replace the old JAR in plugins/, and restart your server. No config changes required.