When I display your instance, there is an error message at the bottom right that says you have a missing configuration:
Impossible de récupérer les identifiants du Client OAuth : undefined. Assurez-vous d'avoir correctement configuré PeerTube (dossier config/), en particulier la section "serveur web".
The error is in french, because my current browser langage is set to french. It says you have miss configured the « webserver » section in your configuration file.
There is still a configuration problem on your server. See the error message at the bottom right (sorry, it’s in french, but you should see it in your langage if you just open your instance).
In the log you posted in the first post there is a secret key. Consider your installation is no more secure. You should delete the database, delete the Peertube folder, and start the installation from scratch. Use the official documentation, and be carefull to not miss any information given in the documentation: https://docs.joinpeertube.org/install-any-os
(or PeerTube documentation if you use docker)
PS: In the logs, there is a log that seems to be related to the error: it searches for example.com instead of your actual domain name for the OAUTH token.
edit: Ok, understood. I did not notice that is was you here: Hi while install by tutorial https://wiki.10friends.info/peertube - #4 par crimy2000
So you probably mixed up some steps from the tutorial and the official documentation. Restart from scratch with the official documentation, and it should be ok (and you have to restart from scratch, because a private key was exposed in your first post, your server installation is no more secure ; and moreover, you setup the server for the wrong domain, example.com).