Selenium is not finding button even though it has a Class Name and XPath

I am attempting to click a save button but Selenium (with Python) is having issues. I keep getting the error, “Message: no such element: Unable to locate element”

Here is the HTML

<input type=”submit” name=”action[save]” class=”FixedRight SPSubmitRequest button save-button disabledsubmit” value=”Save”>

And the XPath

//*[@id=”spsisFunctionJSAutoFormID12″]/table/tbody/tr/td[3]/input

I have attempted the following to no avail

driver.find_element_by_xpath(‘//*[@id=”spsisFunctionJSAutoFormID12″]/table/tbody/tr/td[3]/input’).click()

driver.find_element_by_class_name(‘FixedRight SPSubmitRequest button save-button disabledsubmit” value’).click()

driver.find_element_by_xpath(‘//button[@name=’Save’].click()

None of these work and all produce the same error

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