Client breaks when leaving server

[DreiPixel]

Description of the Bug Encountered
When i Join my server with this mod and leave minecraft starts to lag and in the console it spam this

Steps To Reproduce

1. Join server with mod on client and server
2. Leave server

Expected Behavior
to not do that.

Logs
[18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.frozenblock.lib.config.impl.network.ConfigSyncModification.accept(ConfigSyncModification.java:44) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.frozenblock.lib.config.api.instance.ConfigModification.modifyConfig(ConfigModification.java:57) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.frozenblock.lib.config.api.instance.Config.config(Config.java:98) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.frozenblock.configurableeverything.config.MainConfig$Companion.get(MainConfig.kt:121) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.frozenblock.configurableeverything.config.MainConfig.get(MainConfig.kt) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_2370.convertResourceLocation(class_2370.java:582) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_2370.handler$cjl000$configurable_everything$fixedValue(class_2370.java:543) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_2370.method_10223(class_2370.java:261) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_2348.method_10223(class_2348.java:46) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_9824.handler$hom000$polymer-core$setDefaultModelsForPolymer(class_9824.java:1028) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_9824.method_61053(class_9824.java:104) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_9824.method_61051(class_9824.java:87) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_1088.<init>(class_1088.java:129) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_1092.method_45884(class_1092.java:87) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at knot//net.minecraft.class_1092.md687aee$fabric-model-loading-api-v1$lambda$loadModelPluginData$0$1(class_1092.java:1582) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.CompletableFuture.biApply(CompletableFuture.java:1311) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.CompletableFuture$BiApply.tryFire(CompletableFuture.java:1280) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) [18:58:12] [Worker-ResourceReload-27/INFO]: [STDERR]: java.lang.Exception: Attempted to sync config ./config/configurable_everything/main.djs for mod configurable_everything outside a server!

Additional context
This mod also says that it is server side but you cant join when it isnt installed on the client.