XF 2.1 SOLVED! Installation issue


New member
Hi all,

We want to move from phpBB to xenForo but I cannot get the install to complete.

Here's the error I'm getting: Fatal error: Illegal length modifier specified 'f' in s[np]printf call in /public_html/community/src/vendor/league/flysystem/src/Adapter/Local.php on line 199

This happens when installing. Its writing to the DB but right after it just crashes.

Data and Internal Data have the right recursive 0777

Anyone seen this, I'm out of ideas..



XenForo moderator
Staff member
I don't believe I've ever seen that reported here before (in 10 years).

It's likely going to be something server side but I'm not sure what.

What PHP version is running?

Is there anything in the server error log with any more details?