PDF Viewer error [OJS 3.1.1-4]

Regards

The PDF does exist, it downloads but does not show it, before it did. Chrome’s console shows this:

In the internal network it works without problem and in external networks it does not.

I have this in error log

[Wed Sep 18 15:24:42.780892 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Notice: Only variables should be passed by reference in /home/html/rev2/public_html/plugins/generic/customBlockManager/CustomBlockManagerPlugin.inc.php on line 65, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780904 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Stack trace:, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780913 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 1. {main}() /home/html/rev2/public_html/index.php:0, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780921 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 2. Application->execute() /home/html/rev2/public_html/index.php:68, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780929 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 3. Dispatcher->dispatch() /home/html/rev2/public_html/lib/pkp/classes/core/PKPApplication.inc.php:247, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780936 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 4. PluginRegistry::loadCategory() /home/html/rev2/public_html/lib/pkp/classes/core/Dispatcher.inc.php:132, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780944 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 5. PluginRegistry::register() /home/html/rev2/public_html/lib/pkp/classes/plugins/PluginRegistry.inc.php:141, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.780965 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 6. CustomBlockManagerPlugin->register() /home/html/rev2/public_html/lib/pkp/classes/plugins/PluginRegistry.inc.php:70, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783022 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Warning: Declaration of DRIVERDAO::setOAI(&$oai) should be compatible with PKPOAIDAO::setOAI($oai) in /home/html/rev2/public_html/plugins/generic/driver/DRIVERDAO.inc.php on line 0, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783036 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Stack trace:, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783047 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 1. {main}() /home/html/rev2/public_html/index.php:0, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783056 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 2. Application->execute() /home/html/rev2/public_html/index.php:68, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783065 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 3. Dispatcher->dispatch() /home/html/rev2/public_html/lib/pkp/classes/core/PKPApplication.inc.php:247, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783073 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 4. PluginRegistry::loadCategory() /home/html/rev2/public_html/lib/pkp/classes/core/Dispatcher.inc.php:132, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783082 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 5. PluginRegistry::register() /home/html/rev2/public_html/lib/pkp/classes/plugins/PluginRegistry.inc.php:141, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783090 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 6. DRIVERPlugin->register() /home/html/rev2/public_html/lib/pkp/classes/plugins/PluginRegistry.inc.php:70, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.783098 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 7. DRIVERPlugin->import() /home/html/rev2/public_html/plugins/generic/driver/DRIVERPlugin.inc.php:32, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.788925 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Warning: Declaration of ArticleHandler::initialize($request, $args) should be compatible with PKPHandler::initialize($request) in /home/html/rev2/public_html/pages/article/ArticleHandler.inc.php on line 0, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.788953 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Stack trace:, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.788963 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 1. {main}() /home/html/rev2/public_html/index.php:0, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.788971 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 2. Application->execute() /home/html/rev2/public_html/index.php:68, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.789078 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 3. Dispatcher->dispatch() /home/html/rev2/public_html/lib/pkp/classes/core/PKPApplication.inc.php:247, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.789094 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 4. PageRouter->route() /home/html/rev2/public_html/lib/pkp/classes/core/Dispatcher.inc.php:134, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.789102 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 5. require() /home/html/rev2/public_html/lib/pkp/classes/core/PKPPageRouter.inc.php:189, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.789110 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 6. import() /home/html/rev2/public_html/pages/article/index.php:25, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.800988 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Warning: Declaration of SubmissionFileDAO::fromRow($row) should be compatible with PKPSubmissionFileDAO::fromRow($row, $fileImplementation) in /home/html/rev2/public_html/classes/article/SubmissionFileDAO.inc.php on line 23, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801003 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP Stack trace:, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801014 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 1. {main}() /home/html/rev2/public_html/index.php:0, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801022 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 2. Application->execute() /home/html/rev2/public_html/index.php:68, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801030 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 3. Dispatcher->dispatch() /home/html/rev2/public_html/lib/pkp/classes/core/PKPApplication.inc.php:247, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801038 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 4. PageRouter->route() /home/html/rev2/public_html/lib/pkp/classes/core/Dispatcher.inc.php:134, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801046 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 5. PageRouter->_authorizeInitializeAndCallRequest() /home/html/rev2/public_html/lib/pkp/classes/core/PKPPageRouter.inc.php:232, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801054 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 6. ArticleHandler->download() /home/html/rev2/public_html/lib/pkp/classes/core/PKPRouter.inc.php:390, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801061 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 7. ArticleGalley->getFile() /home/html/rev2/public_html/pages/article/ArticleHandler.inc.php:263, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801069 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 8. DAORegistry::getDAO() /home/html/rev2/public_html/classes/article/ArticleGalley.inc.php:106, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801076 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 9. instantiate() /home/html/rev2/public_html/lib/pkp/classes/db/DAORegistry.inc.php:68, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801099 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 10. import() /home/html/rev2/public_html/lib/pkp/includes/functions.inc.php:203, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js
[Wed Sep 18 15:24:42.801108 2019] [:error] [pid 2636] [client 190.107.154.205:34819] PHP 11. require_once() /home/html/rev2/public_html/lib/pkp/includes/functions.inc.php:25, referer: http://midominio.co/plugins/generic/pdfJsViewer/pdf.js/build/pdf.worker.js