Error message on install

Hello

I have a critical error on install

problem writing temporary file ‘/var/www/vhosts/URL/httpdocs/piwik/tmp/templates_c/wrt4af6e65bc2aba’

Backtrace:

#0 /var/www/vhosts/URL/httpdocs/piwik/libs/Smarty/internals/core.write_file.php(32): Piwik_Smarty->trigger_error(‘problem writing…’)
#1 /var/www/vhosts/URL/httpdocs/piwik/libs/Smarty/internals/core.write_compiled_resource.php(29): smarty_core_write_file(Array, Object(Piwik_Smarty))
#2 /var/www/vhosts/URL/httpdocs/piwik/libs/Smarty/Smarty.class.php(1451): smarty_core_write_compiled_resource(Array, Object(Piwik_Smarty))
#3 /var/www/vhosts/URL/httpdocs/piwik/libs/Smarty/Smarty.class.php(1281): Smarty->_compile_resource(‘Installation/te…’, ‘/var/www/vhosts…’)
#4 /var/www/vhosts/URL/httpdocs/piwik/core/View.php(142): Smarty->fetch(‘Installation/te…’)
#5 /var/www/vhosts/URL/httpdocs/piwik/plugins/Installation/View.php(52): Piwik_View->render()
#6 /var/www/vhosts/URL/httpdocs/piwik/plugins/Installation/Controller.php(67): Piwik_Installation_View->render()
#7 /var/www/vhosts/URL/httpdocs/piwik/plugins/Installation/Installation.php(62): Piwik_Installation_Controller->welcome()
#8 [internal function]: Piwik_Installation->dispatch(Object(Piwik_Event_Notification))
#9 /var/www/vhosts/URL/httpdocs/piwik/libs/Event/Dispatcher.php(213): call_user_func_array(Array, Array)
#10 /var/www/vhosts/URL/httpdocs/piwik/core/PluginsManager.php(363): Event_Dispatcher->addObserver(Array, ‘FrontController…’)
#11 /var/www/vhosts/URL/httpdocs/piwik/core/PluginsManager.php(250): Piwik_PluginsManager->addPluginObservers(Object(Piwik_Installation))
#12 /var/www/vhosts/URL/httpdocs/piwik/core/PluginsManager.php(165): Piwik_PluginsManager->loadPlugins()
#13 /var/www/vhosts/URL/httpdocs/piwik/core/FrontController.php(209): Piwik_PluginsManager->setPluginsToLoad(Array)
#14 /var/www/vhosts/URL/httpdocs/piwik/index.php(90): Piwik_FrontController->init()
#15 {main}

thx for help

??

The web server doesn’t have permission to write to tmp/templates_c

change permissions for …/piwik/tmp to 777 then it should work !