Error reading configuration file

[kingbit1999]

An error occurred while reading the configuration file

Error: Newtonsoft.Json.JsonSerializationException: No JSON content found. Path '', line 1, position 532.
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Populate(JsonReader reader, Object target)
at Newtonsoft.Json.JsonSerializer.PopulateInternal(JsonReader reader, Object target)
at Newtonsoft.Json.JsonConvert.PopulateObject(String value, Object target, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.PopulateObject(String value, Object target)
at HalfLife.UnifiedSdk.MapDecompiler.GUI.Settings.Load() in C:\Users\User\Documents\Documents\GitHub\HalfLifeRepositories\HalfLife.UnifiedSdk.MapDecompiler\HalfLife.UnifiedSdk.MapDecompiler.GUI\Settings.cs:line 155

How to fix?? help please