An invalid .json configuration file might cause your server to crash. It is best not to make direct changes to a .json file since they follow a tight format and even a minor error might render the entire file invalid. In this article we will show you how to fix an invalid .json file error if you ever encountered one!
Example of the error
com.google.gson.JsonParseException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 path $ at ra.a(SourceFile:506) at ra.a(SourceFile:522) at pn.g(SourceFile:141) at nw.A(SourceFile:99) at nw.(SourceFile:25) at nx.j(SourceFile:188) at net.minecraft.server.MinecraftServer.run(SourceFile:434) at java.lang.Thread.run(Thread.java:748) Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 path $ at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1559) at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1401) at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:593) at com.google.gson.stream.JsonReader.peek(JsonReader.java:425) at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:74) at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61) at ra.a(SourceFile:504) ... 7 moreHow to fix it?
Default .json files in the server’s main directory often cause this issue, files suchs as (whitelist.json, banned-ips.json, banned-players.json, ops.json) but be aware if you deleted these files it will be reset meaning you would have to re-configure it again!
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