sorry i was useing a translator. my english is not the best ^.^
the console says following:
[9ac603d9d1ce3a654e702306] /load.php?lang=de&modules=startup&only=scripts&raw=1&skin=pivot BadMethodCallException from line 851 of --path--\includes\session\SessionManager.php: Sessions are disabled for this entry point
Backtrace:
#0 --path--\includes\session\SessionManager.php(334): MediaWiki\Session\SessionManager->getSessionFromInfo(MediaWiki\Session\SessionInfo, WebRequest)
#1 --path--\includes\session\SessionManager.php(268): MediaWiki\Session\SessionManager->getEmptySessionInternal(WebRequest)
#2 --path--\includes\session\SessionManager.php(218): MediaWiki\Session\SessionManager->getEmptySession(WebRequest)
#3 --path--\includes\WebRequest.php(826): MediaWiki\Session\SessionManager->getSessionForRequest(WebRequest)
#4 --path--\includes\user\User.php(1221): WebRequest->getSession()
#5 --path--\includes\user\User.php(388): User->loadFromSession()
#6 --path--\includes\user\User.php(2125): User->load()
#7 --path--\includes\user\User.php(3064): User->getId()
#8 --path--\includes\Permissions\PermissionManager.php(1363): User->isRegistered()
#9 --path--\includes\Permissions\PermissionManager.php(1292): MediaWiki\Permissions\PermissionManager->getRightsCacheKey(User)
#10 --path--\includes\Permissions\PermissionManager.php(1244): MediaWiki\Permissions\PermissionManager->getUserPermissions(User)
#11 --path--\includes\user\User.php(3156): MediaWiki\Permissions\PermissionManager->userHasRight(User, string)
#12 --path--\LocalSettings.php(207): User->isAllowed(string)
#13 --path--\includes\HookContainer\HookContainer.php(320): disableSomeSpecialPages(array)
#14 --path--\includes\HookContainer\HookContainer.php(131): MediaWiki\HookContainer\HookContainer->callLegacyHook(string, array, array, array)
#15 --path--\includes\HookContainer\HookRunner.php(3771): MediaWiki\HookContainer\HookContainer->run(string, array)
#16 --path--\includes\specialpage\SpecialPageFactory.php(347): MediaWiki\HookContainer\HookRunner->onSpecialPage_initList(array)
#17 --path--\includes\specialpage\SpecialPageFactory.php(362): MediaWiki\SpecialPage\SpecialPageFactory->getPageList()
#18 --path--\includes\specialpage\SpecialPageFactory.php(722): MediaWiki\SpecialPage\SpecialPageFactory->getAliasList()
#19 --path--\includes\specialpage\SpecialPage.php(109): MediaWiki\SpecialPage\SpecialPageFactory->getLocalNameFor(string, boolean)
#20 --path--\includes\specialpage\SpecialPage.php(94): SpecialPage::getTitleValueFor(string, boolean, string)
#21 --path--\includes\specialpage\ChangesListSpecialPage.php(873): SpecialPage::getTitleFor(string)
#22 --path--\includes\resourceloader\ResourceLoaderFileModule.php(1216): ChangesListSpecialPage::getRcFiltersConfigSummary(ResourceLoaderContext, GlobalVarConfig, NULL)
#23 --path--\includes\resourceloader\ResourceLoaderFileModule.php(619): ResourceLoaderFileModule->expandPackageFiles(ResourceLoaderContext)
#24 --path--\includes\resourceloader\ResourceLoaderModule.php(842): ResourceLoaderFileModule->getDefinitionSummary(ResourceLoaderContext)
#25 --path--\includes\resourceloader\ResourceLoaderStartUpModule.php(209): ResourceLoaderModule->getVersionHash(ResourceLoaderContext)
#26 --path--\includes\resourceloader\ResourceLoaderStartUpModule.php(405): ResourceLoaderStartUpModule->getModuleRegistrations(ResourceLoaderContext)
#27 --path--\includes\resourceloader\ResourceLoaderModule.php(736): ResourceLoaderStartUpModule->getScript(ResourceLoaderContext)
#28 --path--\includes\resourceloader\ResourceLoaderModule.php(704): ResourceLoaderModule->buildContent(ResourceLoaderContext)
#29 --path--\includes\resourceloader\ResourceLoaderModule.php(839): ResourceLoaderModule->getModuleContent(ResourceLoaderContext)
#30 --path--\includes\resourceloader\ResourceLoader.php(775): ResourceLoaderModule->getVersionHash(ResourceLoaderContext)
#31 [internal function]: ResourceLoader->{closure}(string)
#32 --path--\includes\resourceloader\ResourceLoader.php(787): array_map(Closure, array)
#33 --path--\includes\resourceloader\ResourceLoader.php(874): ResourceLoader->getCombinedVersion(ResourceLoaderContext, array)
#34 --path--\load.php(51): ResourceLoader->respond(ResourceLoaderContext)
#35 --path--\load.php(38): wfLoadMain()
#36 {main}
visualeditor is not installed / not activated
we use the latestet version. i meant 3.15 - sorry
cheers and have a nice weekend