I’ve tried all of those.
Perhaps the error is misleading since I was behind proxy, nevertheless playing around with parameters I’ve discovered that if I set – define( ‘CONCATENATE_SCRIPTS’, false ); also sorts the Media Library issue which lead me to CVE-2018-6389 and using HTTPS sort out the problem.
Without proxy I have no response from server:
load-scripts.php
c 0
load[] {…}
0 hoverIntent,common,admin-bar,underscore,shortcode,backbone,wp-util,wp-backbone,media-models,wp-plupload,jquery-ui-core,jquery-ui
1 -widget,jquery-ui-mouse,jquery-ui-sortable,wp-mediaelement,wp-api-request,media-views,media-editor,media-audiovideo,mce-view,img
2 areaselect,image-edit,media-grid,media,svg-painter,heartbeat,wp-auth-check
ver 4.9.8
It seems that other-pages which uses Media Library will have the same faith.
Something happens while using that specific load-scripts.php
