I get this error after upgrading to EE 2.10.1
Fatal error: Call to undefined function EllisLab\ExpressionEngine\Library\Mime\finfo_open() in /home/foo/bar/EllisLab/ExpressionEngine/Library/Mime/MimeType.php on line 117
I can't upload files through the CP or synchronise in file manager.
I've tried adding fileinfo.so to extension in php.ini as suggsted here https://stackoverflow.com/questions/3579072/php-fileinfo-is-undefined-function but it didn't do anything, just got the same error message.
EllisLab addresses this issue on a blog post. Part of it:
If you encounter problems with uploading files check the following:
- Login to your CP and go to Tools, then Utilities, then PHP Info. If you see --disable-fileinfo on that page (I recommend using your browser’s search function) then you will need to contact your host and have them provide a version of PHP with fileinfo not disabled (i.e. enabled).
- Check your system/expressionengine/config/mimes.php file. If it does not contain $whitelist = array around line 31 you will need to upload a fresh copy.
There's more useful info there.
I solved this installing php7.0-gd.
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
Next, install the desired version:
sudo apt-get install php7.0-gd
# or
sudo apt-get install php7.1-gd
# or
sudo apt-get install php7.2-gd
