It has actually been reported for a while: bugs.limesurvey.org/view.php?id=16348

Not with the additional information about the language. Which seems to be a good additional information. Good that you added it.

However, do you have the same setup as the OP?

Database & DB-Version: SQLServer 2012
Server OS: Windows server 2016
Webserver software & version: IIS
PHP Version: PHP 7.2.31

In any way: As mentioned before, we highly recommend to go with LS 3.x LTS for production. LS 4.x I would use for testing to be prepared when it is ready to be used in production environments.

I'm with XAMPP, PHP 7.3.1 on Windows 10.

@jakeoh : can you activate console in your browser.

If you use Firefox : see the configuration


If you 500 error at right : click on the little triangle at left


Send the screenshot on our mantis.

Better
1. Activate debug mode: manual.limesurvey.org/Debug_mode
2. Try to "Ouvrir l'URL dans un nouvel onglet" (you say you read freench
3. If the error is same (unsure : sometimes need POST request) : send the HTML file on mantis.