How to fix "attempted to read past the end of the stream. (System.io.endofstreamexception)" error

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MVC5

when i try to run my application, on clicking some button,it is working well sometimes but throwing this error sometimes.

Attempted to read past the end of the stream.
(System.IO.EndOfStreamException)

please help me resolve this issue.

What I have tried:

MySqlCommand command = new MySqlCommand("CompetitiveSentimentDistributionByDate", connection);
command.Connection = connection;
command.CommandTimeout = 300;
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@countries", country);
command.Parameters.AddWithValue("@gender", gender);
command.Parameters.AddWithValue("@sources", source);
command.Parameters.AddWithValue("@sentiments", sentiment);
command.Parameters.AddWithValue("@startdate", sdate);
command.Parameters.AddWithValue("@enddate", edate);
command.Parameters.AddWithValue("@keywords", keyword);
command.Parameters.AddWithValue("@tablename", TableName[t]);
MySqlDataAdapter da = new MySqlDataAdapter();
da.SelectCommand = command;

da.Fill(dtnew);
dt.Merge(dtnew);
dtnew.Clear();

this is my code