Format exception with Common.Logging and QueryClient

2017-08-27 17:51:01,080 [225] DEBUG Couchbase.N1QL.QueryClient - <log4net.Error>Exception rendering object type [Common.Logging.Factory.AbstractLogger+StringFormatFormattedMessage]<stackTrace>System.FormatException: Input string was not in a correct format.
at System.Text.StringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ParamsArray args)
at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args)
at System.String.Format(IFormatProvider provider, String format, Object[] args)
at Common.Logging.Factory.AbstractLogger.StringFormatFormattedMessage.ToString() in c:_oss\common-logging\src\Common.Logging.Portable\Logging\Factory\AbstractLogger.cs:line 125
at log4net.ObjectRenderer.DefaultRenderer.RenderObject(RendererMap rendererMap, Object obj, TextWriter writer)
at log4net.ObjectRenderer.RendererMap.FindAndRender(Object obj, TextWriter writer)</stackTrace></log4net.Error>