Experience Profile JS error Uncaught TypeError: Cannot read property 'Message' of undefined

Question

I'm using Sitecore 9.0.1, i'm getting this error in console when opening the experience profile dashboard and it returns no contacts. It looks like this error is due to the ajax response of the following api : /sitecore/api/ao/v1/contacts/search?&pageSize=20&pageNumber=1&.....

I checked the Xconnect logs and got the following error

[Error] Sitecore.XConnect.Operations.SetFacetOperation`1[Sitecore.XConnect.Facet]: 
Sitecore.XConnect.Operations.FacetOperationException: Operation #1, 
AlreadyExists, Contact {3ef744bc-bd5b-0000-0000-055d7358d781}, PhoneNumbers 

Update:

After checking the cm logs again i found this Error

Exception: System.MissingMethodException Message: Method not found: 'Void Newtonsoft.Json.Serialization.JsonObjectContract.set_ParametrizedConstructor(System.Reflection.ConstructorInfo)'. Source: Sitecore.XConnect at Sitecore.XConnect.Serialization.SearchQueryContractResolver.CreateObjectContract(Type objectType) at Newtonsoft.Json.Serialization.DefaultContractResolver.CreateContract(Type objectType) at System.Collections.Concurrent.ConcurrentDictionary2.GetOrAdd(TKey key, Func2 valueFactory) at Newtonsoft.Json.Serialization.DefaultContractResolver.ResolveContract(Type type) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType) at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType) at Newtonsoft.Json.JsonConvert.SerializeObjectInternal(Object value, Type type, JsonSerializer jsonSerializer) at Sitecore.XConnect.Client.WebApi.SearchWebApiClient.<Search>d__91.MoveNext()`

Any idea what might be causing this error?

Answer 1

After investigating i found that this error was due to the following api: /sitecore/api/ao/v1/contacts/search?&pageSize=20&pageNumber=1&..... returning null. And the reason this api returning null is that i was using a "Newtonsoft.Json.dll" version 11 in which the function "set_ParametrizedConstructor" was obsolete So the json response couldn't be deserialized. Replacing the Newtonsoft.Json.dll version 11 with version 9.0.1 solved the problem.