FAERE_Webmaster wrote: Thank you for your answer but I don't think this is the reason: my host says that my website uses 958.89 Mo out of 100 Go!
OK, so why not providing this information from the beginning?
The error message was: "Not enough space". with this information, the solution was: give it more space.
With the additional information, this is a totally different story, of course.
I have never heard of "Go" and "Mo". I would guess we are talking about GB and MB, but anyway, no matter what unit it is. If you only use less than 1 Unit out of 100 Units there should be enough space. However, there could be many different reasons for this and I think this is rather a hosting problem than a LS problem (there is a chance of course, that this is LS, but I think this is a small chance).