org.openqa.selenium.NoSuchElementException：无法找到元素：

我无法单击按钮，因为无法在屏幕截图的标记行上找到元素和异常抛出而抛出异常 .

该按钮需要一些时间来加载，我已经将时间增加到100秒，但这并没有修复错误 .

码：

public static WebElement viewShipment(WebDriver driver, String mskuType) {
    WebElement noOfShipment = driver.findElement(By.xpath(".//*[@id='fba-core-workflow-shipment-summary-shipment']"));
    WebDriverWait wait = new WebDriverWait(driver, 15);
    List<WebElement> shipmentList = noOfShipment.findElements(By.tagName("tr"));
    int shipmentCount = shipmentList.size();

    for (int row=1;row<shipmentCount;row=+1)
    {
        WebElement onOfSkuWE= driver.findElement(By.xpath(".//*[@id='fba-core-workflow-shipment-summary-shipment']/tr["+row+"]/td[3]"));
        String noOfSku = onOfSkuWE.getText();
        int noOfSkuValue = Integer.parseInt(noOfSku);
        for(int i=0;i<2;i++)
        {
            try{
                if(mskuType.equalsIgnoreCase("single"))
                {
                    if(noOfSku.equalsIgnoreCase("1"))
                    {
                        Thread.sleep(10000);
                        WebElement workOnShipmentWE = driver.findElement(By.xpath(".//*[@id='fba-core-workflow-shipment-summary-shipment']/tr["+row+"]/td[6]/button"));
                        wait.until(ExpectedConditions.visibilityOf(workOnShipmentWE));
                        workOnShipmentWE.click();
                        break;
                    }
                }
                else if(mskuType.equalsIgnoreCase("multiple"))
                {
                    if(noOfSkuValue>1)
                    {
                        WebElement moreThanOneUnit = driver.findElement(By.xpath(".//*[@id='fba-core-workflow-shipment-summary-shipment']/tr["+row+"]/td[6]/button"));
                        wait.until(ExpectedConditions.elementToBeClickable(moreThanOneUnit));
                        moreThanOneUnit.click();
                        break;
                    }
                }
            }
            catch(Exception e)
            {
                driver.navigate().refresh();

                e.getMessage();
            }
        }
    }
    return element;
}

HTML：

<tbody id="fba-core-workflow-shipment-summary-shipment">
    <tr>
        <td>FBA (11/3/16 9:32 PM) - 1</td>
        <td>FBA43K62MB</td>
        <td class="number total-line-items">1</td>
        <td class="number total-quantity">3</td>
        <td>
        <td>
            <button class="amznBtn btn-lg-pri-arrowr" onclick="window.location='#FBA43K62MB/prepare'" style="width: 28ex;" type="button" name="Work on shipment">
                <span>Work on shipment</span>
            </button>
            <p class="action-links content-bottom">
            <p class="action-links">
            <p/>
        </td>
    </tr>
    <tr style="display: none;">
    <tr>
    <tr style="display: none;">
    <tr>
    <tr style="display: none;">
</tbody>