Coypu.MissingHtmlException: Unable to find xpath problem while using SendKeys

<table tabindex="-1"
       class="k-grid-table"
       role="presentation"
       style="transform: translateY(0px);">
    <colgroup role="presentation">
        <col class="k-sorted" width="340px">
        <col width="440px">
        <col width="340px">
        <col width="340px">
        <col>
    </colgroup>
    <tbody role="presentation">
        <tr class="k-master-row k-state-selected" role="row" _rowid="7ffec669-e2a1-59dc-bb11-210863485e21" style="height: 30px;">
            <td class="sc-fubCfw irPtrP k-text-left sticky-last k-grid-content-sticky undefined select-cell" style="left: 0px; right: 0px;">
                <i title="New" class="sc-fKFyDc gzkmxX dfI_G11_EntityTrackerNew"></i>
            </td>
            <td class="sc-fubCfw irPtrP   k-text-left  undefined">
            </td>
            <td class="sc-fubCfw irPtrP   k-text-left  undefined"></td>
            <td class="sc-fubCfw irPtrP   k-text-left  undefined">
            </td>
            <td colspan="1"
                class=" phantom  k-text-left   k-text-left "
                role="gridcell" aria-colindex="5" aria-selected="false" _customized="true"></td>
        </tr>
    </tbody>
</table>

string test = "Test";
     OuterClassObject.Click();
  //    Thread.Sleep(1000);
  //     InnerClassElement.SendKeys(test);
  //     OuterClassObject.SendKeys(test);

      InnerClassElement.FillInWith(test);