Connection lost every 10min

Hardware: Raspberry pi 3b+
Software: NextcloudPI
NC Version: 14.0.4 RC 2

problem; Every 10-15min or so i get the message Connection lost, and then the webui isn’t reachable for 1-2min and it goes back on, 10min later it gets again connection lost etc…
ps: there is nothing wrong with my internet. can anyone help me with this, thank you

there is only 1 error in the logging:

Error no app in context RedisException: Connection lost
0./var/www/nextcloud/lib/private/Memcache/Redis.php - line 54:

Redis->get(“ae20da7a355 … s”)

1./var/www/nextcloud/lib/autoloader.php - line 150:

OC\Memcache\Redis->get(“OC_Defaults”)

OC\Autoloader->load(“OC_Defaults”)

3./var/www/nextcloud/apps/theming/lib/ThemingDefaults.php - line 45:

spl_autoload_call(“OC_Defaults”)

4./var/www/nextcloud/lib/composer/composer/ClassLoader.php - line 444:

include("/var/www/ne … p")

5./var/www/nextcloud/lib/composer/composer/ClassLoader.php - line 322:

Composer\Autoload\includeFile("/var/www/ne … p")

Composer\Autoload\ClassLoader->loadClass(“OCA\Theming\ThemingDefaults”)

7./var/www/nextcloud/lib/private/Server.php - line 946:

spl_autoload_call(“OCA\Theming\ThemingDefaults”)

8./var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php - line 118:

OC\Server->OC{closure}("*** sensiti … *")

9./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 117:

Pimple\Container->offsetGet(“ThemingDefaults”)

10./var/www/nextcloud/lib/private/ServerContainer.php - line 132:

OC\AppFramework\Utility\SimpleContainer->query(“ThemingDefaults”)

11./var/www/nextcloud/lib/private/Server.php - line 1858:

OC\ServerContainer->query(“ThemingDefaults”)

12./var/www/nextcloud/lib/private/Server.php - line 1141:

OC\Server->getThemingDefaults()

13./var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php - line 118:

OC\Server->OC{closure}("*** sensiti … *")

14./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 117:

Pimple\Container->offsetGet(“OCP\Defaults”)

15./var/www/nextcloud/lib/private/ServerContainer.php - line 132:

OC\AppFramework\Utility\SimpleContainer->query(“OCP\Defaults”)

16./var/www/nextcloud/lib/private/Server.php - line 826:

OC\ServerContainer->query(“OCP\Defaults”)

17./var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php - line 118:

OC\Server->OC{closure}("*** sensiti … *")

18./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 117:

Pimple\Container->offsetGet(“OCP\Mail\IMailer”)

19./var/www/nextcloud/lib/private/ServerContainer.php - line 132:

OC\AppFramework\Utility\SimpleContainer->query(“OCP\Mail\IMailer”)

20./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 165:

OC\ServerContainer->query(“OCP\Mail\IMailer”)

21./var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php - line 114:

OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}("*** sensiti … *")

22./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 117:

Pimple\Container->offsetGet(“Mailer”)

23./var/www/nextcloud/lib/private/ServerContainer.php - line 132:

OC\AppFramework\Utility\SimpleContainer->query(“Mailer”)

24./var/www/nextcloud/lib/private/Server.php - line 1713:

OC\ServerContainer->query(“Mailer”)

25./var/www/nextcloud/lib/private/Server.php - line 1057:

OC\Server->getMailer()

26./var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php - line 118:

OC\Server->OC{closure}("*** sensiti … *")

27./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 117:

Pimple\Container->offsetGet(“OCP\Share\IManager”)

28./var/www/nextcloud/lib/private/ServerContainer.php - line 132:

OC\AppFramework\Utility\SimpleContainer->query(“OCP\Share\IManager”)

29./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 427:

OC\ServerContainer->query(“OCP\Share\IManager”)

30./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 68:

OC\AppFramework\DependencyInjection\DIContainer->query(“OCP\Share\IManager”)

31./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 98:

OC\AppFramework\Utility\SimpleContainer->buildClass(ReflectionCl … "})

32./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 119:

OC\AppFramework\Utility\SimpleContainer->resolve(“OCA\DAV\C … l”)

33./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 453:

OC\AppFramework\Utility\SimpleContainer->query(“OCA\DAV\C … l”)

34./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 424:

OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback(“OCA\DAV\C … l”)

35./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 68:

OC\AppFramework\DependencyInjection\DIContainer->query(“OCA\DAV\C … l”)

36./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 98:

OC\AppFramework\Utility\SimpleContainer->buildClass(ReflectionCl … "})

37./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 119:

OC\AppFramework\Utility\SimpleContainer->resolve(“OCA\DAV\C … d”)

38./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 453:

OC\AppFramework\Utility\SimpleContainer->query(“OCA\DAV\C … d”)

39./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 424:

OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback(“OCA\DAV\C … d”)

40./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 68:

OC\AppFramework\DependencyInjection\DIContainer->query(“OCA\DAV\C … d”)

41./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 98:

OC\AppFramework\Utility\SimpleContainer->buildClass(ReflectionCl … "})

42./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 119:

OC\AppFramework\Utility\SimpleContainer->resolve(“OCA\DAV\C … e”)

43./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 453:

OC\AppFramework\Utility\SimpleContainer->query(“OCA\DAV\C … e”)

44./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 424:

OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback(“OCA\DAV\C … e”)

45./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 68:

OC\AppFramework\DependencyInjection\DIContainer->query(“OCA\DAV\C … e”)

46./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 98:

OC\AppFramework\Utility\SimpleContainer->buildClass(ReflectionCl … "})

47./var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php - line 119:

OC\AppFramework\Utility\SimpleContainer->resolve(“OCA\DAV\HookManager”)

48./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 453:

OC\AppFramework\Utility\SimpleContainer->query(“OCA\DAV\HookManager”)

49./var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php - line 424:

OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback(“OCA\DAV\HookManager”)

50./var/www/nextcloud/apps/dav/lib/AppInfo/Application.php - line 99:

OC\AppFramework\DependencyInjection\DIContainer->query(“OCA\DAV\HookManager”)

51./var/www/nextcloud/apps/dav/appinfo/app.php - line 31:

OCA\DAV\AppInfo\Application->registerHooks()

52./var/www/nextcloud/lib/private/legacy/app.php - line 261:

require_once("/var/www/ne … p")

53./var/www/nextcloud/lib/private/legacy/app.php - line 154:

OC_App::requireAppFile(OCA\DAV\AppInfo\Application {})

54./var/www/nextcloud/lib/private/legacy/app.php - line 127:

OC_App::loadApp(“dav”)

55./var/www/nextcloud/lib/base.php - line 972:

OC_App::loadApps()

56./var/www/nextcloud/index.php - line 42:

OC::handleRequest()