Ok since the other topic hasn't been visited anymore and I finally can start from scratch, I hope you can answer me this last question to get it working properly...
I just installed 3.4.2 on my 000webhost. The installation was successful but I don't know if everything has been uploaded because an error message displayed:
I don't think this error message is common, can I do anything to solve the problem in case it is a problem?
Thanks for your help in advance.