SqlDefinitions.kt

import org.jetbrains.exposed.sql.Table

object Games: Table() {
    val id = text("id").primaryKey().uniqueIndex()
    val location = text("location")
    val spy_player = integer("spy_player")
    val first_player = integer("first_player")
    val time_start = integer("time_started")
    val pause_time = integer("pause_time").nullable()
}

object Players: Table() {
    val id = integer("id").primaryKey().uniqueIndex().autoIncrement()
    val last_game = text("last_game").nullable()
    val expires_at = integer("expires_at")
    val name = text("name")
}

test.kt

/* imports... */

def main(args: Array<String>) {
    Database.connect("jdbc:sqlite:test.sqlite3", "org.sqlite.JDBC")
    var userId: Int = -1
    transaction(Connection.TRANSACTION_SERIALIZABLE, 2) {  // <-- The failure below causes an AbstractMethodError here: Method org/sqlite/PrepStmt.isClosed()Z is abstract
        create(Games, Players)  // <-- Fails here; no ResultSet returned, SQLException
        userId = Players.insert {
            it[name] = "test"
            it[expires_at] = 10
        } get Players.id
    }
    println(userId)
}