Duplicated item in creative tab crash

According to your testing, does the issue occur with ONLY Portal Gun mod and Immersive Portals mod and Farbic API?

Yes

Describe the issue

when registering the creative inventory tab, if maxEnergy = 0 then the item is duplicated, which crashes

the crash at startup only occurs due to CC:Tweaked, however entering the creative mode inventory crashes without any additional mods as far as I know

java.lang.IllegalStateException: Accidentally adding the same item stack twice [Portal Gun] to a Creative Mode Tab: Portal Gun at net.minecraft.class_1761$class_7703.method_45417(class_1761.java:252) ~[client-intermediary.jar:?] at net.minecraft.class_1761$class_7704.method_45420(class_1761.java:278) ~[client-intermediary.jar:?] at portalgun.PortalGunMod.lambda$static$1(PortalGunMod.java:74) ~[portalgun-6.2.0-mc1.20.4-fabric.jar:?] at net.minecraft.class_1761.method_47306(class_1761.java:101) ~[client-intermediary.jar:?] at net.minecraft.class_7706.method_47338(class_7706.java:2131) ~[client-intermediary.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) ~[?:?] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[?:?] at java.util.Iterator.forEachRemaining(Iterator.java:133) ~[?:?] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1845) ~[?:?] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[?:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[?:?] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) ~[?:?] at net.minecraft.class_7706.method_47337(class_7706.java:2131) ~[client-intermediary.jar:?] at net.minecraft.class_7706.method_47330(class_7706.java:2142) ~[client-intermediary.jar:?] at dan200.computercraft.shared.CommonHooks.onServerStarted(CommonHooks.java:69) ~[cc-tweaked-1.20.4-fabric-1.109.5.jar:?] at net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.lambda$static$2(ServerLifecycleEvents.java:49) ~[fabric-lifecycle-events-v1-2.3.0+a67ffb5d4f-df781ed0de5bc62e.jar:?] at net.minecraft.server.MinecraftServer.handler$bei000$fabric-lifecycle-events-v1$afterSetupServer(MinecraftServer.java:2914) ~[client-intermediary.jar:?] at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:654) ~[client-intermediary.jar:?] at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:270) ~[client-intermediary.jar:?] at java.lang.Thread.run(Thread.java:833) ~[?:?]

Post the log here

too long for github, will post somehow if necessary, but a simple check for maxEnergy should sufice:

replace:
entries.accept(new PortalGunItem.ItemInfo(
                BlockList.createDefault(), maxEnergy, maxEnergy
            ).toStack());

with:
if(maxEnegy!=0) {
entries.accept(new PortalGunItem.ItemInfo(
                BlockList.createDefault(), maxEnergy, maxEnergy
            ).toStack());
}

iPortalTeam / PortalGun