Plugin doesn't work properly

`/viaversion dump` Output

https://dump.viaversion.com/941d52de173c3e172eb22580b72de4f27d28673f60d65ad3a84cd10c501916ba

Console Error

[20:17:53 INFO]: [PluginPortal] Enabling PluginPortal v1.5.0 [20:17:56 ERROR]: Error occurred while enabling PluginPortal v1.5.0 (Is it up to date?) java.lang.NoSuchMethodError: 'com.google.gson.JsonElement com.google.gson.JsonParser.parseString(java.lang.String)' at link.portalbox.pplib.util.HTTPKt.getJSONFromURL(HTTP.kt:21) ~[?:?] at link.portalbox.pplib.util.APIKt.getPPVersions(API.kt:49) ~[?:?] at link.portalbox.pplib.util.APIKt.getLatestPPVersion(API.kt:24) ~[?:?] at link.portalbox.pplib.util.APIKt.getLatestVersion(API.kt:28) ~[?:?] at link.portalbox.pluginportal.type.Data.init(Data.kt:54) ~[?:?] at link.portalbox.pluginportal.PluginPortal.onEnable(PluginPortal.kt:24) ~[?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[patched_1.12.2.jar:git-Paper-1620] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:316) ~[patched_1.12.2.jar:git-Paper-1620] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) ~[patched_1.12.2.jar:git-Paper-1620] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:395) ~[patched_1.12.2.jar:git-Paper-1620] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:344) ~[patched_1.12.2.jar:git-Paper-1620] at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:442) ~[patched_1.12.2.jar:git-Paper-1620] at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:403) ~[patched_1.12.2.jar:git-Paper-1620] at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:341) ~[patched_1.12.2.jar:git-Paper-1620] at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:289) ~[patched_1.12.2.jar:git-Paper-1620] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:616) ~[patched_1.12.2.jar:git-Paper-1620] at java.lang.Thread.run(Thread.java:833) [?:?] [20:17:56 INFO]: [PluginPortal] Disabling PluginPortal v1.5.0

Bug Description

Plugin doesn't run cause of some kind of gson error

Steps to Reproduce

Plugin doesn't run...

Expected Behavior

Plugin Should Run

Additional Server Info

None

Checklist

[X] I have tried the latest build(s) from https://ci.viaversion.com/ and the issue still persists.
[X] Via plugins are only running on EITHER the backend servers (e.g. Paper) OR the proxy (e.g. BungeeCord), not on both.
[X] I have included a ViaVersion dump.
[X] If applicable, I have included a paste (not a screenshot) of the error.

flytegg / plugin-portal