élément non trouvé de sélénium stackOverflow

WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement el = wait.until(ExpectedConditions.presenceOfElementLocated(By.className("messageStackError")));
el.getText()WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement el = wait.until(ExpectedConditions.presenceOfElementLocated(By.className("messageStackError")));
el.getText()
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