How does `fetch` work? about grakkit HOT 5 CLOSED

const requests = [];

stdlib.event('org.bukkit.event.player.AsyncPlayerChatEvent', event => {
   requests.push(() => {
      stdlib.fetch('https://raw.githubusercontent.com/LearnWebCode/json-example/master/animals-1.json')
         .json(true)
         .then(data => console.log(JSON.stringify(data)));
   })
});

stdlib.task.interval(() => {
   for (const request of requests.splice(0, requests.length)) {
      request();
   }
});

[grakkit] Task #12 for grakkit v5.0.4 generated an exception
java.util.ConcurrentModificationException: null
	at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:970) ~[?:?]
	at java.util.LinkedList$ListItr.next(LinkedList.java:892) ~[?:?]
	at java.lang.Iterable.forEach(Iterable.java:74) ~[?:?]
	at grakkit.Grakkit.tick(Grakkit.java:94) ~[grakkit-5.0.4.paper(1).jar:?]
	at org.bukkit.craftbukkit.v1_18_R1.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.18.1.jar:git-Paper-147]
	at org.bukkit.craftbukkit.v1_18_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:483) ~[paper-1.18.1.jar:git-Paper-147]
	at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1547) ~[paper-1.18.1.jar:git-Paper-147]
	at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:480) ~[paper-1.18.1.jar:git-Paper-147]
	at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1470) ~[paper-1.18.1.jar:git-Paper-147]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1264) ~[paper-1.18.1.jar:git-Paper-147]
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:317) ~[paper-1.18.1.jar:git-Paper-147]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]