OJS 2.x error pdf view after create remote galley

I created a remote galley by mistake and after that I can’t view pdf of articles. I can download without any problem but seems like pdf visor load url of remote galley (I deleted the remote galley but the problem still continue)

Anybody could help me? thanks in advance

Some updates of the issue:

I deactivated de google pdf visor module, and activated pdf.js module visor and resolve the issue, now I can view pdf in article page.

Any suggestion What could happen?

If anybody has same problem is a usual issue. You can find the solution here: https://forum.pkp.sfu.ca/t/problem-with-display-of-pdf-file-in-google-viewer/34354/2