Fatal Error after logging into admin panel

[robfico]

git clone https://github.com/magento/magento2.git
cd magento2
composer install

[web based setup to complete install]

php 5.5, mysql 5.6, etc...

After logging into the admin panel, white screen with this fatal error:

PHP Fatal error: Only variables can be passed by reference in /home/xxx/www/store/magento2/app/code/Magento/Backend/view/adminhtml/templates/system/search.phtml on line 31

system.log shows:

[2015-09-14 14:45:18] main.CRITICAL: Broken reference: the 'header' tries to reorder itself towards 'global.notices', but their parents are different: 'page.wrapper' and 'notices.wrapper' respectively. [] []
[2015-09-14 14:45:18] main.CRITICAL: Broken reference: the 'page.breadcrumbs' tries to reorder itself towards 'notifications', but their parents are different: 'page.wrapper' and 'notices.wrapper' respectively.[] []

[2015-09-14 14:45:18] main.CRITICAL: Broken reference: the 'global.search' tries to reorder itself towards 'notification.messages', but their parents are different: 'header.inner.right' and 'header' respectively. [] []

Front end works fine.

[robfico]

Tested the install on a few different servers, still seeing this same fatal error. Environments are:
centOS 6, 64-bit
php-fpm 5.5.29 (with zend opcache) (also tried on php 5.5.27 with no zend opcache)
MySQL 5.6.25
Apache 2.4.16 using mod_fastcgi for php-fpm

Not sure what else to check...

[mazhalai]

@robfico can you check if you are in "production", "developer" or "default" mode.

[robfico]

bin/magento deploy:mode:show
[InvalidArgumentException]
There are no commands defined in the "deploy:mode" namespace.

Just trying to test it out, all I did was:
git clone https://github.com/magento/magento2.git
cd magento2
composer install
(ran web based installer to complete install) - did not alter any advanced options

Then once I enter admin username/password, it fails with that error. Maybe I'm missing something obvious... Just trying a generic install.

[mazhalai]

@robfico are you on develop branch or master? the deploy:mode:show is new and is only available on the develop branch

[robfico]

I assume:
git clone https://github.com/magento/magento2.git

gets the master branch. So likely master.

[mazhalai]

what does git status show you specifically interested in the line that says Your branch is up-to-date with ...

[mazhalai]

@robfico we are having trouble reproducing this issue. can you try to login to admin after clearing you var directory? Also please check your server (apache or nginx) logs for more detailed error. That will help us identify the problem.

[robfico]

I have tried both a develop and master install, both work fine for front-end, after entering admin login details, goes to white screen with this error (from web log) (i cleared /var, restarted php-fpm, etc...):

http://xxx/magento2/admin/admin/dashboard/index/key/.../

[Wed Sep 16 14:52:25.491753 2015] [:error] [pid 28139:tid 139895538394880] [client 73.167.19.154:49183] FastCGI: server "/dev/shm/xxx-php.fcgi" stderr: PHP message: PHP Fatal error: Only variables can be passed by reference in /home/xxx/www/magento2/app/code/Magento/Backend/view/adminhtml/templates/system/search.phtml on line 31, referer: http://xxx/magento2/admin/

debug.log:
[2015-09-16 14:56:54] main.DEBUG: cache_invalidate: {"method":"POST","url":"http://xxx/magento2/admin/","invalidateInfo":{"tags":["BACKEND_MAINMENU"],"mode":"matchingAnyTag"},"is_exception":false} []

system.log:
[2015-09-16 14:56:54] main.INFO: Item Magento_Backend::system_currency was removed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Theme::system_design_theme was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_design_schedule was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_store was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::dashboard was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_tools was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_design was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_convert was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_cache was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::marketing was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::marketing_communications was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::marketing_seo was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::marketing_user_content was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::content was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::content_elements was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::stores was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::stores_settings was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::stores_attributes was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::other_settings was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::system_other_settings was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backend::setup_wizard was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Backup::system_tools_backup was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Customer::customer was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Customer::customer_manage was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Customer::customer_group was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Indexer::system_index was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Cms::cms_page was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Cms::cms_block was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Catalog::catalog was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Catalog::catalog_products was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Catalog::catalog_categories was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Catalog::catalog_attributes_attributes was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Catalog::catalog_attributes_sets was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Catalog::inventory was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Search::search_terms was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Widget::cms_widget_instance was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_CheckoutAgreements::sales_checkoutagreement was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Config::system_config was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_CurrencySymbol::system_currency was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_CurrencySymbol::system_currency_rates was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_CurrencySymbol::system_currency_symbols was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Downloadable::report_products_downloads was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Email::template was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales_operation was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales_order was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales_invoice was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales_shipment was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales_creditmemo was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::sales_transactions was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sales::system_order_statuses was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_ImportExport::system_convert_import was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_ImportExport::system_convert_export was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_ImportExport::system_convert_history was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_User::system_acl was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_User::system_acl_users was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_User::system_acl_roles was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Log::visitor_online was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Newsletter::newsletter_template was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Newsletter::newsletter_queue was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Newsletter::newsletter_subscriber was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Newsletter::newsletter_problem was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_SalesRule::promo_quote was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Paypal::report_salesroot_paypal_settlement_reports was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Paypal::paypal_billing_agreement was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_marketing was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot_sales was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot_tax was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot_invoiced was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot_shipping was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot_refunded was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_salesroot_coupons was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_shopcart_product was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_shopcart_abandoned was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_products was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_products_bestsellers was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_products_sold was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_products_viewed was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_products_lowstock was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_customers was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_customers_accounts was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_customers_totals was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_customers_orders was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_statistics was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Reports::report_statistics_refresh was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Search::report_search_term was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Review::catalog_reviews_ratings_ratings was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Review::catalog_reviews_ratings_reviews_all was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Review::report_review was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Review::report_review_customer was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Review::report_review_product was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_CatalogRule::promo was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_CatalogRule::promo_catalog was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Sitemap::catalog_sitemap was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_AdminNotification::system_adminnotification was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Tax::sales_tax was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Tax::sales_tax_rules was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Tax::sales_tax_rates was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_TaxImportExport::system_convert_tax was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_UrlRewrite::urlrewrite was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Integration::system_extensions was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Integration::system_integrations was processed [] []
[2015-09-16 14:56:54] main.INFO: Add of item with id Magento_Variable::system_variable was processed [] []
[2015-09-16 14:56:54] main.CRITICAL: Broken reference: the 'header' tries to reorder itself towards 'global.notices', but their parents are different: 'page.wrapper' and 'notices.wrapper' respectively. [] []
[2015-09-16 14:56:54] main.CRITICAL: Broken reference: the 'page.breadcrumbs' tries to reorder itself towards 'notifications', but their parents are different: 'page.wrapper' and 'notices.wrapper' respectively. [] []
[2015-09-16 14:56:54] main.CRITICAL: Broken reference: the 'global.search' tries to reorder itself towards 'notification.messages', but their parents are different: 'header.inner.right' and 'header' respectively. [] []

[mazhalai]

@robfico but these are magento logs, they dont really tell us much. What server are you using?

[robfico]

We are running Apache 2.4.16 with php-fpm, from the Apache log:

PHP Fatal error: Only variables can be passed by reference in /home/xxx/www/magento2/app/code/Magento/Backend/view/adminhtml/templates/system/search.phtml on line 31, referer: http://xxx/magento2/admin/

That is the Apache error. Same error installing develop mode:
$ git status

On branch develop

nothing to commit (working directory clean)

or master branch:
$ git status|more

On branch master

Changes not staged for commit:

(use "git add ..." to update what will be committed)

(use "git checkout -- ..." to discard changes in working directory)

[robfico]

As a follow up, I was able to install and get it working on a server using mod_php (php compiled into Apache 2.4). However, on servers running PHP as php-fpm using mod_fastcgi (Apache 2.2 or 2.4) that error appears every time after logging into the admin panel.

Note that these php-fpm servers are also running Magento 1 stores without any issues, so there seems to be an issue / bug with Magento2 and a config using php-fpm via mod_fastcgi. Something must have changed in recent M2 versions, as I was successful getting it to work with earlier M2 versions on php-fpm.

[mazhalai]

@robfico thank you for that clarification. We have created MAGETWO-42979 to track a fix for it.