System.IO.FileNotFoundException: Could not load file or assembly... (.resources)

On my ASP.NET Web API i have a method that parses some data from email messages using MsgReader. It works OK, but after a while it starts to throw following exception:

System.IO.FileNotFoundException: Could not load file or assembly 'MsgReader.resources, Version=2.1.3.0, Culture=en-US, PublicKeyToken=47f99f3a9a2648df' or one of its dependencies. The system cannot find the file specified.
File name: 'MsgReader.resources, Version=2.1.3.0, Culture=en-US, PublicKeyToken=47f99f3a9a2648df' ---> System.IO.FileNotFoundException: The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
   at System.Reflection.RuntimeAssembly.nLoadFile(String path, Evidence evidence)
   at System.Reflection.Assembly.LoadFile(String path)
   at System.AppDomain.OnAssemblyResolveEvent(RuntimeAssembly assembly, String assemblyFullName)
   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalGetSatelliteAssembly(String name, CultureInfo culture, Version version, Boolean throwOnFileNotFound, StackCrawlMark& stackMark)
   at System.Resources.ManifestBasedResourceGroveler.GetSatelliteAssembly(CultureInfo lookForCulture, StackCrawlMark& stackMark)
   at System.Resources.ManifestBasedResourceGroveler.GrovelForResourceSet(CultureInfo culture, Dictionary`2 localResourceSets, Boolean tryParents, Boolean createIfNotExists, StackCrawlMark& stackMark)
   at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo requestedCulture, Boolean createIfNotExists, Boolean tryParents, StackCrawlMark& stackMark)
   at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents)
   at System.Resources.ResourceManager.GetString(String name, CultureInfo culture)
   at MsgReader.Mime.MessagePart..ctor(Byte[] rawBody, MessageHeader headers) in C:\Users\Kees\Documents\GitHub\MsgReader\MsgReader\Mime\MessagePart.cs:line 242
   at MsgReader.Mime.Message..ctor(Byte[] rawMessageContent, Boolean parseBody) in C:\Users\Kees\Documents\GitHub\MsgReader\MsgReader\Mime\Message.cs:line 139
   at MsgReader.Mime.Message.Load(Stream messageStream) in C:\Users\Kees\Documents\GitHub\MsgReader\MsgReader\Mime\Message.cs:line 301
   at MsgReader.Outlook.Storage.Message.LoadClearSignedMessage(IStorage storage) in C:\Users\Kees\Documents\GitHub\MsgReader\MsgReader\Outlook\Message.cs:line 1558
   at MsgReader.Outlook.Storage.Message.LoadStorage(IStorage storage) in C:\Users\Kees\Documents\GitHub\MsgReader\MsgReader\Outlook\Message.cs:line 1384
   at MsgReader.Outlook.Storage..ctor(Stream storageStream, FileAccess fileAccess) in C:\Users\Kees\Documents\GitHub\MsgReader\MsgReader\Outlook\Storage.cs:line 196
   ...

After i recycle application pool, it works again (for a while) then at some time the error repeats...

I tried with assemblyBinding

  <dependentAssembly>
    <assemblyIdentity name="MsgReader" publicKeyToken="47f99f3a9a2648df" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-2.1.3.0" newVersion="2.1.3.0" />
  </dependentAssembly>

but no success...

I think the problem the problem is with Culture? Because as i see in error the Culture is en-US, but in MsgReader package there are only these cultures:

This is the part of the code where the exception is thrown:

var ext = Path.GetExtension(fileName)?.Replace(".", "").ToLower();
if (ext == "eml")
{
    using (var connection = new SqlConnection(ConnectionString))
    {
        connection.Open();
        var msg = new MsgReader.Mime.Message(datoteka.Bytes);
        new HProperty(datoteka.ResourceId, "DateSent",
                msg.Headers.DateSent.ToLocalTime().ToString("dd.MM.yyyy HH:mm:ss"))
            .Save(connection);
        new HProperty(datoteka.ResourceId, "From", msg.Headers.From.Raw)
            .Save(connection);
        new HProperty(datoteka.ResourceId, "To",
                string.Join("; ", msg.Headers.To.Select(x => x.Raw)))
            .Save(connection);
        new HProperty(datoteka.ResourceId, "Cc",
                string.Join("; ", msg.Headers.Cc.Select(x => x.Raw)))
            .Save(connection);
        new HProperty(datoteka.ResourceId, "Bcc",
                string.Join("; ", msg.Headers.Bcc.Select(x => x.Raw)))
            .Save(connection);
        new HProperty(datoteka.ResourceId, "Subject", msg.Headers.Subject)
            .Save(connection);
    }
}
else if (ext == "msg")
{
    using (var connection = new SqlConnection(ConnectionString))
    {
        connection.Open();
        using (var stream = new MemoryStream(datoteka.Bytes))
        using (var msg = new Storage.Message(stream))
        {
            new HProperty(datoteka.ResourceId, "DateSent",
                    msg.Headers.DateSent.ToLocalTime().ToString("dd.MM.yyyy HH:mm:ss"))
                .Save(connection);
            new HProperty(datoteka.ResourceId, "From", msg.Headers.From.Raw)
                .Save(connection);
            new HProperty(datoteka.ResourceId, "To",
                    string.Join("; ", msg.Headers.To.Select(x => x.Raw)))
                .Save(connection);
            new HProperty(datoteka.ResourceId, "Cc",
                    string.Join("; ", msg.Headers.Cc.Select(x => x.Raw)))
                .Save(connection);
            new HProperty(datoteka.ResourceId, "Bcc",
                    string.Join("; ", msg.Headers.Bcc.Select(x => x.Raw)))
                .Save(connection);
            new HProperty(datoteka.ResourceId, "Subject", msg.Headers.Subject)
                .Save(connection);
            if (msg.SignatureIsValid != null)
                new HProperty(datoteka.ResourceId, "SignatureIsValid",
                        msg.SignatureIsValid.Value
                            ? "true"
                            : "false")
                    .Save(connection);
            if (msg.SignedBy != null)
                new HProperty(datoteka.ResourceId, "SignedBy", msg.SignedBy)
                    .Save(connection);
            if (msg.SignedOn != null)
                new HProperty(datoteka.ResourceId, "SignedOn",
                        msg.SignedOn.Value.ToLocalTime().ToString("dd.MM.yyyy HH:mm:ss"))
                    .Save(connection);
        }
    }
}