Unable to locate element - reported by a recorded script on a heavy responsive ajax/react one page app.

Unable to locate element - reported by a recorded script on a heavy responsive ajax/react one page app.

Hello,

Trying to monitor a site that has a login page rendered on the fly but it fails with

> Unable to locate element "name=locationId" in step - 1 "Step - 1 : Loading -_URL_

Here how the script starts

begin_step("Step - 1 : Loading - https://www.mydomain.com/p...", "https://www.mydomain.com/public/context/login/backdoor/index.html")
load_page("https://www.mydomain.com/public/context/login/backdoor/index.html")
verify_page_load_status()
click_element_by_name("locationId", "", "#SEP#name=locationId#SEP#css=input[name=\"locationId\"]#SEP#css=.jss9#SEP#xpath=//div[@id='app-root']/div/div/div[2]/form/div/div/div/input#XPATH#/html/body/div/div/div/div[2]/form/div/div/div/input#XPATH#//input[@name='locationId']#XPATH#/html/body/div/div/div/div/form/div/div/div/input#XPATH##SEP#")

Any ideas why and how I can bypass this ?