[SOLVED] Log write error

Hello,
A short time ago, I had to setup Projeqtor on a new machine and I got a problem, which was not blocking the application usage.
Since the connection I had this message from the server:
"Log respository '../files/logs' is locked. Can't write any logs."
That's pretty obvious, and so my problem too.
So I checked rights and owners, which seems to be correct, I also tried to chmod 777 to check if it wasn't the wrong user, without success...
I also tried to change the log path on parameters.php.
Creating a new log respository didn't solve my problem too. So I'm looking for you if somebody got an answer to this issue.

Thank you in advance to anyone who may be able to give me some ideas.

I tried to translate my topic, sorry for posting it in French the first time

Thank you very much, I did not think to this solution but it worked.
I'm very thankful, good day to you !