file permissions problem in version 5.8.4

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When edit page attributes I have this error {"error":{"message":"Argument 1 passed to Concrete\\Core\\Tree\\Menu\\Item\\AbstractNodeItem::__construct() must be an instance of Concrete\\Core\\Tree\\Node\\Node, null given, called in \/srv\/users\/serverpilot\/apps\/concrete5\/public\/concrete\/src\/File\/Menu.php on line 94"},"errors":["Argument 1 passed to Concrete\\Core\\Tree\\Menu\\Item\\AbstractNodeItem::__construct() must be an instance of Concrete\\Core\\Tree\\Node\\Node, null given, called in \/srv\/users\/serverpilot\/apps\/concrete5\/public\/concrete\/src\/File\/Menu.php on line 94"]}
In this file if I close line
<code>
if ($fp->canDeleteFile()) {
// $this->addItem(new DeleteItem($file->getFileNodeObject()));
}</code>
I don't see error. I am super administrator and have permission to delete files.


Status: New
theana27

concrete5 Environment Information

# concrete5 Version
Core Version - 8.4.0RC1
Version Installed - 8.4.0RC1
Database Version - 20180330080830

# concrete5 Packages
Add and Remove Classes and IDs (0.9.5), Advanced HTML Block (0.9), Clearing Lightbox (1.0.1), Contact Form (No Links) (1.0), Foundation (1.2.3), Login/Logout Link (1.0), Manual Nav (2.2.0), Rescan All Files (0.1.5), Simple Anchor (1.0.1), Slidorion (1.0.1), Vivid Store (3.0.1), Web Parser (0.2.9), Zoomer (1.0.1)

# concrete5 Overrides
blocks/page_list/controller.php, blocks/page_list/page_list_form.php, blocks/page_list/templates/article_grid/view.php, blocks/page_list/templates/article_grid, blocks/page_list/templates/double_card/view.php, blocks/page_list/templates/double_card, blocks/page_list/templates/catalogue/view.php, blocks/page_list/templates/catalogue, blocks/page_list/templates/doubled_catalogue/view.php, blocks/page_list/templates/doubled_catalogue, blocks/page_list/templates/callout_card/view.php, blocks/page_list/templates/callout_card, blocks/page_list/templates/form_catalogue/view.js, blocks/page_list/templates/form_catalogue/view.php, blocks/page_list/templates/form_catalogue, blocks/page_list/templates/one_letter/view.php, blocks/page_list/templates/one_letter, blocks/page_list/templates/pagelist_offcanvas/view.js, blocks/page_list/templates/pagelist_offcanvas/view.php, blocks/page_list/templates/pagelist_offcanvas, blocks/page_list/templates/articles_list/view.php, blocks/page_list/templates/articles_list, blocks/page_list/templates, blocks/page_list, blocks/topic_list/templates/foundation_flat_topic/view.php, blocks/topic_list/templates/foundation_flat_topic, blocks/topic_list/templates/foundation_topic/view.css, blocks/topic_list/templates/foundation_topic/view.php, blocks/topic_list/templates/foundation_topic, blocks/topic_list/templates/vertical_drop/view.php, blocks/topic_list/templates/vertical_drop, blocks/topic_list/templates/dropdown_topic/view.php, blocks/topic_list/templates/dropdown_topic, blocks/topic_list/templates, blocks/topic_list, blocks/faq/templates/azbuka/view.css, blocks/faq/templates/azbuka/view.php, blocks/faq/templates/azbuka, blocks/faq/templates/alfabet/view.css, blocks/faq/templates/alfabet/view.php, blocks/faq/templates/alfabet, blocks/faq/templates/slider_thumb_text/view.php, blocks/faq/templates/slider_thumb_text, blocks/faq/templates, blocks/faq, blocks/next_previous/controller.php, blocks/next_previous/templates/simple_nav.php, blocks/next_previous/templates/inline_next_previous.php, blocks/next_previous/templates, blocks/next_previous, blocks/content/templates/sticky/view.php, blocks/content/templates/sticky, blocks/content/templates/alfavit/view.css, blocks/content/templates/alfavit/view.php, blocks/content/templates/alfavit, blocks/content/templates, blocks/content, blocks/vivid_product/templates/cart_description.php, blocks/vivid_product/templates, blocks/vivid_product, blocks/image_slider/templates/orbit_slider.php, blocks/image_slider/templates/thumb_slider_with_caption/view.php, blocks/image_slider/templates/thumb_slider_with_caption, blocks/image_slider/templates, blocks/image_slider, blocks/image/templates/card/view.php, blocks/image/templates/card, blocks/image/templates/image_title_description/view.php, blocks/image/templates/image_title_description, blocks/image/templates, blocks/image, blocks/share_this_page/templates/slticky_left_share/view.php, blocks/share_this_page/templates/slticky_left_share, blocks/share_this_page/templates/foundation_share/view.css, blocks/share_this_page/templates/foundation_share/view.php, blocks/share_this_page/templates/foundation_share, blocks/share_this_page/templates, blocks/share_this_page, blocks/tags/templates/like_form_tags/view.php, blocks/tags/templates/like_form_tags, blocks/tags/templates/catalogue_tags/view.php, blocks/tags/templates/catalogue_tags, blocks/tags/templates/button_group_tags/view.php, blocks/tags/templates/button_group_tags, blocks/tags/templates, blocks/tags, blocks/autonav/templates/off_canvas/view.php, blocks/autonav/templates/off_canvas, blocks/autonav/templates/accordion_autonav/view.js, blocks/autonav/templates/accordion_autonav/view.php, blocks/autonav/templates/accordion_autonav, blocks/autonav/templates/f_breadcrumbs/view.php, blocks/autonav/templates/f_breadcrumbs, blocks/autonav/templates/horizontal_button/view.php, blocks/autonav/templates/horizontal_button, blocks/autonav/templates/top_bar/view.php, blocks/autonav/templates/top_bar, blocks/autonav/templates/horizontal_nav/view.php, blocks/autonav/templates/horizontal_nav, blocks/autonav/templates, blocks/autonav, controllers/single_page/smeta.php, controllers/single_page/architector.php, controllers/single_page, controllers/page_types/article_list.php, controllers/page_types/search_plan.php, controllers/page_types/articles.php, controllers/page_types/full.php, controllers/page_types, jobs/clear_empty_workflow_progress.php, jobs/update_page_description.php, jobs/delete_file_version.php, jobs/delete_filesets.php, mail/mail_template.php, single_pages/page_not_found.php, single_pages/smeta.php, single_pages/register.txt, single_pages/architector.php

# concrete5 Cache Settings
Block Cache - On
Overrides Cache - On
Full Page Caching - On - If blocks on the particular page allow it.
Full Page Cache Lifetime - Every 6 hours (default setting).

# Server Software
Apache/2.4.28 (Unix) OpenSSL/1.0.1f

# Server API
fpm-fcgi

# PHP Version
7.1.14

# PHP Extensions
bcmath, bz2, calendar, cgi-fcgi, Core, ctype, curl, date, dom, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, imap, intl, json, ldap, libxml, mbstring, mcrypt, mysqli, mysqlnd, odbc, openssl, pcntl, pcre, PDO, pdo_dblib, pdo_mysql, PDO_ODBC, pdo_pgsql, pdo_sqlite, pgsql, Phar, posix, readline, Reflection, session, shmop, SimpleXML, snmp, soap, sockets, SPL, sqlite3, standard, tidy, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, Zend OPcache, zip, zlib

# PHP Settings
max_execution_time - 60
log_errors_max_len - 1024
max_file_uploads - 20
max_input_nesting_level - 64
max_input_time - -1
max_input_vars - 5000
memory_limit - 512M
post_max_size - 512M
sql.safe_mode - Off
upload_max_filesize - 256M
ldap.max_links - Unlimited
mysqli.max_links - Unlimited
mysqli.max_persistent - Unlimited
odbc.max_links - Unlimited
odbc.max_persistent - Unlimited
pcre.backtrack_limit - 1000000
pcre.recursion_limit - 100000
pgsql.max_links - Unlimited
pgsql.max_persistent - Unlimited
session.cache_limiter - <i>no value</i>
session.gc_maxlifetime - 7200
soap.wsdl_cache_limit - 5
opcache.max_accelerated_files - 4000
opcache.max_file_size - 0
opcache.max_wasted_percentage - 5

Browser User-Agent String

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36