After magento is installed, the following message is displayed: HTTPERROR500. how can this problem be solved?

I installed magento2 on ubuntu14. when I access localhost on the webpage, the apache prompt ItWork is displayed !, However, when localhostmagento2 prompts HTTPERROR500, I installed it with the following command: {code ...} after the error, I checked the php error... I installed magento2 on ubuntu14, and accessed http: // localhost/on the webpage to display the apache prompt It Work !, However, http: // localhost/magento2/prompts http error 500
I installed it with the following command:

apt-get updateapt-get install git wgetwget -O /usr/local/bin/composer http://getcomposer.org/composer.pharchmod +x /usr/local/bin/composercd /var/wwwgit clone https://github.com/magento/magento2.gitcd /var/www/magento2composer install

After an error occurs, I checked the php error log and the prompt is as follows:

[Thu Sep 11:03:34. 275419 2016] [: error] [pid 2214] [client 127.0.0.1: 41732] PHP Fatal error: uncaught exception 'magento \ Framework \ Exception \ filesystemexception' with message 'The file "/var/www/html/magento2/var /. regenerate "cannot be deleted Warning! Unlink (/var/www/html/magento2/var /. regenerate): Permission denied 'in/var/www/html/magento2/vendor/magento/framework/Filesystem/Driver/File. php: 382 nStack trace: n #0/var/www/html/magento2/vendor/magento/framework/Filesystem/Directory/Write. php (173): Magento \ Framework \ Filesystem \ Driver \ File-> deleteFile ('/var/www/html/m... ') n #1/var/www/html/magento2/vendor/magento/framework/Code/GeneratedFiles. php (98): Magento \ Framework \ Filesystem \ Directory \ Write-> delete ('/var /. regenerat... ') n #2/var/www/html/magento2/vendor/magento/framework/App/ObjectManagerFactory. php (114): Magento \ Framework \ Code \ GeneratedFiles-> cleanGeneratedFiles () n #3/var/www/html/magento2/vendor/magento/framework/App/Bootstrap. php (385): Magento \ Framework \ App \ ObjectManagerFactory-> create (Array) n #4/var/www/html/magento2/vendor/magento/framework/App/Bootstrap. php (362): Magento \ Framework \ App \ Bootstra in/var/www/html/magento2/vendor/magento/framework/Filesystem/Driver/File. php on line 382

How can this problem be solved? Allows me to install magento normally

Reply content:

I installed magento2 on ubuntu14, and accessed http: // localhost/on the webpage to display the apache prompt It Work !, However, http: // localhost/magento2/prompts http error 500
I installed it with the following command:

apt-get updateapt-get install git wgetwget -O /usr/local/bin/composer http://getcomposer.org/composer.pharchmod +x /usr/local/bin/composercd /var/wwwgit clone https://github.com/magento/magento2.gitcd /var/www/magento2composer install

After an error occurs, I checked the php error log and the prompt is as follows:

[Thu Sep 11:03:34. 275419 2016] [: error] [pid 2214] [client 127.0.0.1: 41732] PHP Fatal error: uncaught exception 'magento \ Framework \ Exception \ filesystemexception' with message 'The file "/var/www/html/magento2/var /. regenerate "cannot be deleted Warning! Unlink (/var/www/html/magento2/var /. regenerate): Permission denied 'in/var/www/html/magento2/vendor/magento/framework/Filesystem/Driver/File. php: 382 nStack trace: n #0/var/www/html/magento2/vendor/magento/framework/Filesystem/Directory/Write. php (173): Magento \ Framework \ Filesystem \ Driver \ File-> deleteFile ('/var/www/html/m... ') n #1/var/www/html/magento2/vendor/magento/framework/Code/GeneratedFiles. php (98): Magento \ Framework \ Filesystem \ Directory \ Write-> delete ('/var /. regenerat... ') n #2/var/www/html/magento2/vendor/magento/framework/App/ObjectManagerFactory. php (114): Magento \ Framework \ Code \ GeneratedFiles-> cleanGeneratedFiles () n #3/var/www/html/magento2/vendor/magento/framework/App/Bootstrap. php (385): Magento \ Framework \ App \ ObjectManagerFactory-> create (Array) n #4/var/www/html/magento2/vendor/magento/framework/App/Bootstrap. php (362): Magento \ Framework \ App \ Bootstra in/var/www/html/magento2/vendor/magento/framework/Filesystem/Driver/File. php on line 382

How can this problem be solved? Allows me to install magento normally

Try the installation package on the official website.

Permission denied

The permission is insufficient. make sure that the./var directory is writable. it is better that the owner of the project directory belongs to apache.
Chown-R apache: apache ./