New Installation not working properly

I have just installed a new WordPress site using Plesk, however I am having problems with css errors (I think). I have tried reinstalling with no plugins, and have removed the default theme but nothing is working. The main dashboard looks fine on first glance, but when going to the Themes page, no images of the themes are displayed. If trying to Customise, the control bar comes up on the left hand side is completely blank apart from displaying the website name at the top and the symbols for responsive design at the bottom. The main page is also completely blank. If I inspect the page, the errors come up as follows:

JQMIGRATE: Migrate is installed, version 3.4.0
i18n.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:48 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:48:9 customize.php?return=%2Fwp-admin%2Fthemes.php:54 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:54:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:55:4 a11y.min.js:1 Uncaught SyntaxError: Unexpected token '<' wp-util.min.js:1 Uncaught SyntaxError: Unexpected token '<' core.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize-controls.min.js:1 Uncaught SyntaxError: Unexpected token '<' mouse.min.js:1 Uncaught SyntaxError: Unexpected token '<' sortable.min.js:1 Uncaught SyntaxError: Unexpected token '<' draggable.min.js:1 Uncaught SyntaxError: Unexpected token '<' droppable.min.js:1 Uncaught SyntaxError: Unexpected token '<' backbone.min.js:1 Uncaught SyntaxError: Unexpected token '<' wp-backbone.min.js:1 Uncaught SyntaxError: Unexpected token '<' utils.min.js:1 Uncaught SyntaxError: Unexpected token '<' editor.min.js:1 Uncaught SyntaxError: Unexpected token '<' wp-ajax-response.min.js:1 Uncaught SyntaxError: Unexpected token '<' jquery.color.min.js:1 Uncaught SyntaxError: Unexpected token '<' wp-lists.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:92 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:92:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:93:4 postbox.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:103 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:103:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:104:4 nav-menu.min.js:1 Uncaught SyntaxError: Unexpected token '<' shortcode.min.js:1 Uncaught SyntaxError: Unexpected token '<' media-models.min.js:1 Uncaught SyntaxError: Unexpected token '<' moxie.min.js:1 Uncaught SyntaxError: Unexpected token '<' plupload.min.js:1 Uncaught SyntaxError: Unexpected token '<' wp-plupload.min.js:1 Uncaught SyntaxError: Unexpected token '<' mediaelement-and-player.min.js:1 Uncaught SyntaxError: Unexpected token '<' mediaelement-migrate.min.js:1 Uncaught SyntaxError: Unexpected token '<' wp-mediaelement.min.js:1 Uncaught SyntaxError: Unexpected token '<' clipboard.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:140 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:140:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:141:4 media-views.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:148 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:148:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:149:4 media-editor.min.js:1 Uncaught SyntaxError: Unexpected token '<' media-audiovideo.min.js:1 Uncaught SyntaxError: Unexpected token '<' codemirror.min.js:1 Uncaught SyntaxError: Unexpected token '<' code-editor.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:156 Uncaught TypeError: Cannot read properties of undefined (reading 'defaultSettings') at customize.php?return=%2Fwp-admin%2Fthemes.php:156:30 slider.min.js:1 Uncaught SyntaxError: Unexpected token '<' jquery.ui.touch-punch.js:1 Uncaught SyntaxError: Unexpected token '<' iris.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:166 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:166:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:167:4 color-picker.min.js:1 Uncaught SyntaxError: Unexpected token '<' palette-colorpicker.js:1 Uncaught SyntaxError: Unexpected token '<' media-widgets.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:173 Uncaught TypeError: Cannot read properties of undefined (reading 'init') at customize.php?return=%2Fwp-admin%2Fthemes.php:173:17 media-audio-widget.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:177 Uncaught TypeError: Cannot read properties of undefined (reading 'modelConstructors') at customize.php?return=%2Fwp-admin%2Fthemes.php:177:17 media-image-widget.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:185 Uncaught TypeError: Cannot read properties of undefined (reading 'modelConstructors') at customize.php?return=%2Fwp-admin%2Fthemes.php:185:17 media-gallery-widget.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:193 Uncaught TypeError: Cannot read properties of undefined (reading 'modelConstructors') at customize.php?return=%2Fwp-admin%2Fthemes.php:193:17 media-video-widget.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:201 Uncaught TypeError: Cannot read properties of undefined (reading 'modelConstructors') at customize.php?return=%2Fwp-admin%2Fthemes.php:201:17 text-widgets.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:209 Uncaught TypeError: Cannot read properties of undefined (reading 'idBases') at customize.php?return=%2Fwp-admin%2Fthemes.php:209:16 htmlhint.js:1 Uncaught SyntaxError: Unexpected token '<' csslint.js:1 Uncaught SyntaxError: Unexpected token '<' esprima.js:1 Uncaught SyntaxError: Unexpected token '<' custom-html-widgets.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:218 Uncaught TypeError: Cannot read properties of undefined (reading 'idBases') at customize.php?return=%2Fwp-admin%2Fthemes.php:218:22 load-scripts.php?c=0&load%5Bchunk_0%5D=heartbeat,customize-widgets&ver=6.2:4 Uncaught ReferenceError: Backbone is not defined at load-scripts.php?c=0&load%5Bchunk_0%5D=heartbeat,customize-widgets&ver=6.2:4:338 at load-scripts.php?c=0&load%5Bchunk_0%5D=heartbeat,customize-widgets&ver=6.2:4:28003 lodash.min.js:1 Uncaught SyntaxError: Unexpected token '<' react.min.js:1 Uncaught SyntaxError: Unexpected token '<' react-dom.min.js:1 Uncaught SyntaxError: Unexpected token '<' url.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1710 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1710:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1711:4 api-fetch.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1715 Uncaught TypeError: Cannot read properties of undefined (reading 'use') at customize.php?return=%2Fwp-admin%2Fthemes.php:1715:13 autop.min.js:1 Uncaught SyntaxError: Unexpected token '<' block-serialization-…ult-parser.min.js:1 Uncaught SyntaxError: Unexpected token '<' dom.min.js:1 Uncaught SyntaxError: Unexpected token '<' escape-html.min.js:1 Uncaught SyntaxError: Unexpected token '<' element.min.js:1 Uncaught SyntaxError: Unexpected token '<' is-shallow-equal.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1733 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1733:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1734:4 keycodes.min.js:1 Uncaught SyntaxError: Unexpected token '<' priority-queue.min.js:1 Uncaught SyntaxError: Unexpected token '<' compose.min.js:1 Uncaught SyntaxError: Unexpected token '<' private-apis.min.js:1 Uncaught SyntaxError: Unexpected token '<' redux-routine.min.js:1 Uncaught SyntaxError: Unexpected token '<' data.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1747 Uncaught TypeError: Cannot read properties of undefined (reading 'use') at customize.php?return=%2Fwp-admin%2Fthemes.php:1747:4 at customize.php?return=%2Fwp-admin%2Fthemes.php:1748:4 shortcode.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1756 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1756:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1757:4 blocks.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1761 Uncaught TypeError: Cannot read properties of undefined (reading 'unstable__bootstrapServerSideBlockDefinitions') at customize.php?return=%2Fwp-admin%2Fthemes.php:1761:11 moment.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1766 Uncaught ReferenceError: moment is not defined at customize.php?return=%2Fwp-admin%2Fthemes.php:1766:1 date.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1770 Uncaught TypeError: Cannot read properties of undefined (reading 'setSettings') at customize.php?return=%2Fwp-admin%2Fthemes.php:1770:9 primitives.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1777 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1777:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1778:4 rich-text.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1786 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1786:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1787:4 components.min.js:1 Uncaught SyntaxError: Unexpected token '<' keyboard-shortcuts.min.js:1 Uncaught SyntaxError: Unexpected token '<' notices.min.js:1 Uncaught SyntaxError: Unexpected token '<' preferences-persistence.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1797 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1797:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1798:4 preferences.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1805 Uncaught TypeError: Cannot read properties of undefined (reading '__unstableCreatePersistenceLayer') at customize.php?return=%2Fwp-admin%2Fthemes.php:1805:54 at customize.php?return=%2Fwp-admin%2Fthemes.php:1808:8 style-engine.min.js:1 Uncaught SyntaxError: Unexpected token '<' token-list.min.js:1 Uncaught SyntaxError: Unexpected token '<' wordcount.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1817 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1817:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1818:4 block-editor.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1825 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1825:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1826:4 core-data.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1833 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1833:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1834:4 reusable-blocks.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1841 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1841:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1842:4 server-side-render.min.js:1 Uncaught SyntaxError: Unexpected token '<' viewport.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1850 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1850:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1851:4 block-library.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1858 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1858:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1859:4 media-utils.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1866 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1866:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1867:4 widgets.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1874 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1874:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1875:4 customize-widgets.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1885 Uncaught TypeError: Cannot read properties of undefined (reading 'registerBlockStyle') at customize.php?return=%2Fwp-admin%2Fthemes.php:1885:12 at customize.php?return=%2Fwp-admin%2Fthemes.php:1895:4 customize.php?return=%2Fwp-admin%2Fthemes.php:1901 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1901:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1902:4 editor.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1906 Uncaught TypeError: Cannot convert undefined or null to object at Function.assign ()
at customize.php?return=%2Fwp-admin%2Fthemes.php:1906:8
plugins.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1913 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1913:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1914:4 block-directory.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1921 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1921:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1922:4 format-library.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize-nav-menus.min.js:1 Uncaught SyntaxError: Unexpected token '<' jquery.imgareaselect.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize-models.js:1 Uncaught SyntaxError: Unexpected token '<' customize-views.js:1 Uncaught SyntaxError: Unexpected token '<' mce-view.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1943 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1943:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1944:4 image-edit.min.js:1 Uncaught SyntaxError: Unexpected token '<' hoverIntent.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1952 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1952:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1953:4 common.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:1964 Uncaught TypeError: Cannot read properties of undefined (reading 'setLocaleData') at customize.php?return=%2Fwp-admin%2Fthemes.php:1964:10 at customize.php?return=%2Fwp-admin%2Fthemes.php:1965:4 updates.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize-helpers.js:1 Uncaught SyntaxError: Unexpected token '<' quicktags.min.js:1 Uncaught SyntaxError: Unexpected token '<' wplink.min.js:1 Uncaught SyntaxError: Unexpected token '<' menu.min.js:1 Uncaught SyntaxError: Unexpected token '<' autocomplete.min.js:1 Uncaught SyntaxError: Unexpected token '<' thickbox.js:1 Uncaught SyntaxError: Unexpected token '<' media-upload.min.js:1 Uncaught SyntaxError: Unexpected token '<' tinymce.min.js:1 Uncaught SyntaxError: Unexpected token '<' plugin.min.js:1 Uncaught SyntaxError: Unexpected token '<' customize.php?return=%2Fwp-admin%2Fthemes.php:2010 Uncaught ReferenceError: tinymce is not defined at customize.php?return=%2Fwp-admin%2Fthemes.php:2010:1 customize.php?return=%2Fwp-admin%2Fthemes.php:5491 Uncaught TypeError: Cannot read properties of undefined (reading 'now') at customize.php?return=%2Fwp-admin%2Fthemes.php:5491:52 customize.php?return=%2Fwp-admin%2Fthemes.php:1880 Uncaught TypeError: Cannot read properties of undefined (reading 'initialize') at HTMLDocument. (customize.php?return=%2Fwp-admin%2Fthemes.php:1880:29)
editor.js?ver=1.8:4 Uncaught TypeError: Cannot read properties of undefined (reading 'unregisterBlockStyle')
at HTMLDocument. (editor.js?ver=1.8:4:12)
/wp-includes/js/wp-e…se.min.js?ver=6.2:1 Uncaught SyntaxError: Unexpected token '<'