XF 2.1 I cannot modify templates

[Radhi]

Hello
I can't do anything with the dashboard and I can't modify templates
This problem comes out to me

File licenses are 777

ErrorException: [E_WARNING] file_put_contents(/home/user/public_html/vb/internal_data/code_cache/templates/l5/s27/public/extra.less.php): failed to open stream: Permission denied in src/vendor/league/flysystem/src/Adapter/Local.php at line 200
XF::handlePhpError()
file_put_contents() in src/vendor/league/flysystem/src/Adapter/Local.php at line 200
League\Flysystem\Adapter\Local->update() in src/vendor/league/flysystem/src/Filesystem.php at line 99
League\Flysystem\Filesystem->put()
call_user_func_array() in src/vendor/league/flysystem-eventable-filesystem/src/EventableFilesystem.php at line 431
League\Flysystem\EventableFilesystem\EventableFilesystem->callFilesystemMethod() in src/vendor/league/flysystem-eventable-filesystem/src/EventableFilesystem.php at line 395
League\Flysystem\EventableFilesystem\EventableFilesystem->delegateMethodCall() in src/vendor/league/flysystem-eventable-filesystem/src/EventableFilesystem.php at line 57
League\Flysystem\EventableFilesystem\EventableFilesystem->put() in src/vendor/league/flysystem/src/MountManager.php at line 595
League\Flysystem\MountManager->put() in src/XF/Util/File.php at line 197
XF\Util\File::writeToAbstractedPath() in src/XF/Service/Template/Compile.php at line 146
XF\Service\Template\Compile->writeCompiled() in src/XF/Service/Template/Compile.php at line 43
XF\Service\Template\Compile->recompile() in src/XF/Entity/Template.php at line 433
XF\Entity\Template->_postSave() in src/XF/Mvc/Entity/Entity.php at line 1208
XF\Mvc\Entity\Entity->save() in src/XF/Mvc/FormAction.php at line 69
XF\Mvc\FormAction->XF\Mvc\{closure}() in src/XF/Mvc/FormAction.php at line 187
XF\Mvc\FormAction->run() in src/XF/Admin/Controller/Template.php at line 151
XF\Admin\Controller\Template->actionSave() in src/XF/Mvc/Dispatcher.php at line 321
XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 248
XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 100
XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 50
XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2178
XF\App->run() in src/XF.php at line 390
XF::runApp() in admin.php at line 13