As usual I’ve made the PIWIK upgrade using my browser. But last upgrade to 2.5.0 was wrong; the PIWIK URL is now showing an error message and I’m unable to connect.
The only information shown on the piwik screen:
[i][b]Cannot connect to the database:
SQLSTATE  Access denied for user ‘www-data’@‘localhost’ (using password: NO)
This may be a temporary issue, try refreshing the page. If the problem persists please contact your Piwik administrator.[/b][/i]
I must admit I did not made any backup of the directory content before launching this automatic upgrade…
Any idea? How can I recover ? please help! Thanks