i started using selenuim, node js
it was working all perfect so far, sudenly the same script is throwing and error
\"unhandled promise rejection warning element
These locators worked for me for the url you shared:
driver.findElement(By.xpath('(//input[@id="username"])[2]')).sendKeys('test@emal');
driver.findElement(By.xpath('(//input[@id="password"])[2]')).sendKeys('passowrod');
driver.findElement(By.xpath('(//button[@class="boton acceder"])[2]')).click();
The reason for using 2nd index for all the elements is that the same elements are in HEADER which are hidden.
Note: I tried these in python, so please adjust if any string syntax error.