Die Seite wird normal angezeigt wenn ich folgenden Code in die functions.php schreibe:
Woran kann es denn liegen, dass diese Fehler beim Umzug der Webseite entstehen?

//JQuery override
function my_scripts_method() {
	wp_deregister_script( 'jquery' );
	wp_register_script( 'jquery', 'https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js');
	wp_enqueue_script( 'jquery' );
	}
	add_action('wp_enqueue_scripts', 'my_scripts_method');

Es muss an jquery liegen. Allerdings wird Enfold nicht richtig geladen im Backend und es werden keine Icons angezeigt und man kann auch unter den Einstellungen von Enfold nichts sehen. Diese Fehlermeldungen sind im Backend zu sehen:

Uncaught SyntaxError: Invalid or unexpected token
jquery-migrate.js:752 Uncaught ReferenceError: jQuery is not defined
at jquery-migrate.js:752
import-export-page.js:272 Uncaught ReferenceError: jQuery is not defined
at import-export-page.js:272
mediaelement-migrate.js:84 Uncaught ReferenceError: jQuery is not defined
at mediaelement-migrate.js:84
avia_dynamic_templates.js:14 Uncaught ReferenceError: jQuery is not defined
at avia_dynamic_templates.js:14
avia_media_wp35.js:344 Uncaught ReferenceError: jQuery is not defined
at avia_media_wp35.js:344
avia_advanced_form_elements.js:16 Uncaught ReferenceError: jQuery is not defined
at avia_advanced_form_elements.js:16
avia_media.js:322 Uncaught ReferenceError: jQuery is not defined
at avia_media.js:322
avia_sidebar.js:107 Uncaught ReferenceError: jQuery is not defined
at avia_sidebar.js:107
avia_colorpicker.js:12 Uncaught ReferenceError: jQuery is not defined
at avia_colorpicker.js:12
avia_option_pages.js:12 Uncaught ReferenceError: jQuery is not defined
at avia_option_pages.js:12
avia_mega_menu.js:125 Uncaught ReferenceError: jQuery is not defined
at avia_mega_menu.js:125
avia_edit_dynamic_templtes.js:14 Uncaught ReferenceError: jQuery is not defined
at avia_edit_dynamic_templtes.js:14
avia_media_advanced.js?ver=4.6:571 Uncaught ReferenceError: jQuery is not defined
at avia_media_advanced.js?ver=4.6:571
hoverIntent.js:115 Uncaught ReferenceError: jQuery is not defined
at hoverIntent.js:115
common.js:1152 Uncaught ReferenceError: jQuery is not defined
at common.js:1152
svg-painter.js:240 Uncaught ReferenceError: jQuery is not defined
at svg-painter.js:240
heartbeat.js:776 Uncaught ReferenceError: jQuery is not defined
at heartbeat.js:776
wp-auth-check.js:117 Uncaught ReferenceError: jQuery is not defined
at wp-auth-check.js:117
api-request.js:96 Uncaught ReferenceError: jQuery is not defined
at api-request.js:96
wp-api.js?ver=5.0.1:1140 Uncaught ReferenceError: jQuery is not defined
at n.initialize (wp-api.js?ver=5.0.1:1140)
at n.e.Model (backbone.min.js?ver=1.2.3:1)
at new n (backbone.min.js?ver=1.2.3:1)
at WP_API.wp.api.init (wp-api.js?ver=5.0.1:1516)
at wp-api.js?ver=5.0.1:1539
at wp-api.js?ver=5.0.1:1541
yith-ywraq-admin.js:9 Uncaught ReferenceError: jQuery is not defined
at yith-ywraq-admin.js:9
thickbox.js?ver=3.1-20121105:15 Uncaught ReferenceError: jQuery is not defined
at thickbox.js?ver=3.1-20121105:15
media-upload.js?ver=5.0.1:69 Uncaught ReferenceError: jQuery is not defined
at media-upload.js?ver=5.0.1:69
core.min.js:11 Uncaught ReferenceError: jQuery is not defined
at core.min.js:11
at core.min.js:11
widget.min.js:11 Uncaught ReferenceError: jQuery is not defined
at widget.min.js:11
at widget.min.js:11
mouse.min.js:11 Uncaught ReferenceError: jQuery is not defined
at mouse.min.js:11
at mouse.min.js:11
sortable.min.js:11 Uncaught ReferenceError: jQuery is not defined
at sortable.min.js:11
at sortable.min.js:11
wp-util.js:126 Uncaught ReferenceError: jQuery is not defined
at wp-util.js:126
wp-backbone.js:391 Uncaught ReferenceError: jQuery is not defined
at wp-backbone.js:391
media-models.js:92 Uncaught ReferenceError: jQuery is not defined
at Object.20 (media-models.js:92)
at __webpack_require__ (media-models.js:20)
at media-models.js:84
at media-models.js:87
wp-plupload.js:425 Uncaught ReferenceError: jQuery is not defined
at wp-plupload.js:425
wp-mediaelement.js:82 Uncaught ReferenceError: jQuery is not defined
at wp-mediaelement.js:82
media-views.js:92 Uncaught ReferenceError: jQuery is not defined
at Object.<anonymous> (media-views.js:92)
at __webpack_require__ (media-views.js:20)
at media-views.js:84
at media-views.js:87
media-editor.js:1058 Uncaught ReferenceError: jQuery is not defined
at media-editor.js:1058
media-audiovideo.js:103 Uncaught TypeError: Cannot set property ‘mixin’ of undefined
at Object.<anonymous> (media-audiovideo.js:103)
at __webpack_require__ (media-audiovideo.js:20)
at media-audiovideo.js:84
at media-audiovideo.js:87
mce-view.js?ver=5.0.1:816 Uncaught TypeError: Cannot read property ‘template’ of undefined
at mce-view.js?ver=5.0.1:816
at mce-view.js?ver=5.0.1:974
jquery.imgareaselect.js:1232 Uncaught ReferenceError: jQuery is not defined
at jquery.imgareaselect.js:1232
image-edit.js:1092 Uncaught ReferenceError: jQuery is not defined
at image-edit.js:1092

In der wp-config.php sind noch folgende Zeilen implementiert, damit das Backend so wenigstens einigermaßen läuft:

	define( 'CONCATENATE_SCRIPTS', false );
define( 'SCRIPT_DEBUG', true );

Wie kann ich die Probleme mit den jQuery Versionen lösen?

Ich hoffe mir kann jemand weiter helfen.

Vielen Dank im Voraus!

I have deactivate all plugins one by one. The Probleme is still there.
Less mistakes but still not working.

Vielen Dank!

Ich werde es probieren und mich melden :)