XF 2.0 update to the latest version brings in the forum and admin area a white styles

Ne I do not use at the time yet that has come only after I have uploaded the update files and have made the update on rc2 since I have no styles view more.
So now an update to RC3 still made the same picture please clarify.

Server error log
ErrorException: [E_WARNING] Declaration of SV\RedisCache\XF\CssWriter::run(array $templates, $styleId, $languageId) should be compatible with XF\CssWriter::run(array $templates, $styleId, $languageId, $validation = NULL)
Generated by: Unknown account
Nov 25, 2017 at 7:35 PM
Last edited: