SEKeywords error giving me a blank website

[forumuser]

Thanks in advance for your assistance.

After upgrading my existing presta shop with the latest files, my website went blank.

So I looked up what error is causing it and it states:

Fatal error: Declaration of SEKeywords::getData() must be compatible with that of ModuleGraph::getData() in .../html/modules/sekeywords/sekeywords.php on line 13

Does anyone know how I can fix this?

[forumuser]

UPDATE: I have just replaced that error file but now I have a new problem.


My CSS does not seem to be loading (site has no styling)

AND

I don't see my old products -- just the default items in prestashop

Which file(s) am I supposed to transfer from my old backup version to the new version in order to see my products?