Theme is "broken", stylesheet not found

Hi, I really need your help.

I don´t know what I did but Sydney Theme seems to be “broken”. I read a thread with the same message “stylesheet not found” and you told him to uninstall and reinstall the theme. I tried that but it doesn´t allow me to unistall and, if I try to install it again, it says the folder already exists.

I may have done something to the theme-basic.css file. Please help…

Hello @rsantosl,

Please try to manually reinstall the theme through SFTP or cPanel.

You can check this WordPress Codex page in order to learn how to do it:
https://codex.wordpress.org/Using_Themes

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.