Connector throws NPE when using custom converter

// DBZ-2673
// It is necessary to check the type names as types like ENUM and SET are
// also reported as JDBC type char
else if (!connectorConfig.customConverterRegistry().isEmpty() && TEXT_DATATYPES.contains(column.typeName())) {
try {
    return rs.getString(columnIndex).getBytes(column.charsetName());
}
catch (UnsupportedEncodingException e) {
      logger.warn("Unsupported encoding '{}' for column '{}', sending value as String");
      return rs.getObject(columnIndex);
}
}