Problem behind a reverse proxy

Hi

Application Version - ojs-3.3.0-5
PHP 7.4.3
Ubuntu 20.04.2 LTS
Apache 2.4.41

I’ve been trying to run OJS behind a reverse proxy and failing. The base_url in config.inc.php is configured to be: **base_url = http://example.com/publicaciones . and base_url[index] http://example.com/publicaciones/index.php/index is also configured for index.

I have also been using ProxyHTMLURLMap in my proxy server and it looks like this:

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The previous configuration solved most of the problems, I can already use the reverse proxy correctly except for the loading of two plugins and some fonts.

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This path isn’t correct

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This path is correct

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l read this post (Error when submitting an article - #5 by asmecher) but in the version ojs-3.3.0-5 l didn’t find the file
lib/pkp/templates/common/header.tpl

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Apparently that file was removed

How can l resolve this issue?