Error after uploading in public_html

Hello,

Yesterday, I uploaded the files of matomo in the public_html of my server with FileZilla.
In a folder called matomo.
When I want to open the url: https://www.thecementgrindingoffice.com/matomo/
I get the following error message:
Matomo encountered an error: No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension). (which lead to: SQLSTATE[HY000] [1045] Access denied for user ‘’@‘localhost’ (using password: NO))

Do you know the reason and what is the solution?

Thank you in advance for the help.

Did you try the solution it states in the error message? :wink:

Thanks, it is solved.
I asked to my host and they installed the mbstring extension.
Matomo is now working properly.