Mail app error crowded my log -.-

What is it and how can I fix it?

app":“mail”,“method”:“GET”,“url”:"/index.php/apps/mail/api/accounts/10/folders/SU5CT1g%3D/sync?syncToken=VTExLFYxNTE2ODE3MzU1",“message”:{“Exception”:“Horde_Imap_Client_Exception”,“Message”:“Error when communicating with the mail server.”,“Code”:12,“Trace”:[{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4545,“function”:“read”,“class”:“Horde_Imap_Client_Socket_Connection_Socket”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4317,“function”:"_getLine",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4245,“function”:"_sendCmdChunk",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},[{“debug”:[],“literalplus”:true,“literal8”:false,“on_error”:null,“on_success”:null,“pipeline”:{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},“response”:{“tag”:“2”,“responseCode”:null,“status”:4,“token”:{“class”:“Horde_Imap_Client_Tokenize”},“class”:“Horde_Imap_Client_Interaction_Server_Tagged”},“tag”:“2”,“class”:“Horde_Imap_Client_Interaction_Command”}]]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:232,“function”:"_sendCmd",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“debug”:[],“literalplus”:true,“literal8”:false,“on_error”:null,“on_success”:null,“pipeline”:{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},“response”:{“tag”:“2”,“responseCode”:null,“status”:4,“token”:{“class”:“Horde_Imap_Client_Tokenize”},“class”:“Horde_Imap_Client_Interaction_Server_Tagged”},“tag”:“2”,“class”:“Horde_Imap_Client_Interaction_Command”}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:654,“function”:"_initCapability",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:962,“function”:"_capability",“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[“LANGUAGE”]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:929,“function”:“setLanguage”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:556,“function”:"_loginTasks",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:["*** sensitive parameters replaced "]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:838,“function”:"_login",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[" sensitive parameters replaced "]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:1598,“function”:“login”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[" sensitive parameters replaced ***"]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:4038,“function”:“status”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},8713]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:3632,“function”:"_syncStatus",“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”}]},{“file”:"/var/www/nextcloud/apps/mail/lib/IMAP/Sync/Synchronizer.php",“line”:61,“function”:“sync”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},“U11,V1516817355”,{“ids”:{“duplicates”:false,“class”:“Horde_Imap_Client_Ids”}}]},{“file”:"/var/www/nextcloud/apps/mail/lib/Service/MailManager.php",“line”:110,“function”:“sync”,“class”:“OCA\Mail\IMAP\Sync\Synchronizer”,“type”:"->",“args”:[{“cacheFields”:{“9”:“HICenv”,“10”:“HICflags”,“8”:“HIChdrs”,“11”:“HICdate”,“12”:“HICsize”,“1”:“HICstruct”},“changed”:true,“statuscache”:true,“class”:“Horde_Imap_Client_Socket”},{“class”:“OCA\Mail\IMAP\Sync\Request”}]},{“file”:"/var/www/nextcloud/apps/mail/lib/Controller/FoldersController.php",“line”:102,“function”:“syncMessages”,“class”:“OCA\Mail\Service\MailManager”,“type”:"->",“args”:[{“class”:“OCA\Mail\Account”},{“class”:“OCA\Mail\IMAP\Sync\Request”}]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",“line”:166,“function”:“sync”,“class”:“OCA\Mail\Controller\FoldersController”,“type”:"->",“args”:[10,“SU5CT1g=”,“VTExLFYxNTE2ODE3MzU1”,[]]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",“line”:99,“function”:“executeController”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:"->",“args”:[{“class”:“OCA\Mail\Controller\FoldersController”},“sync”]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/App.php",“line”:126,“function”:“dispatch”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:"->",“args”:[{“class”:“OCA\Mail\Controller\FoldersController”},“sync”]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php",“line”:47,“function”:“main”,“class”:“OC\AppFramework\App”,“type”:"::",“args”:[“OCA\Mail\Controller\FoldersController”,“sync”,{“class”:“OC\AppFramework\DependencyInjection\DIContainer”},{“accountId”:“10”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“function”:"__invoke",“class”:“OC\AppFramework\Routing\RouteActionHandler”,“type”:"->",“args”:[{“accountId”:“10”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“file”:"/var/www/nextcloud/lib/private/Route/Router.php",“line”:297,“function”:“call_user_func”,“args”:[{“class”:“OC\AppFramework\Routing\RouteActionHandler”},{“accountId”:“10”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“file”:"/var/www/nextcloud/lib/base.php",“line”:975,“function”:“match”,“class”:“OC\Route\Router”,“type”:"->",“args”:["/apps/mail/api/accounts/10/folders/SU5CT1g%3D/sync"]},{“file”:"/var/www/nextcloud/index.php",“line”:42,“function”:“handleRequest”,“class”:“OC”,“type”:"::",“args”:[]}],“File”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket/Connection/Socket.php",“Line”:213,“CustomMessage”:"–"},“userAgent”:“Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0”,“version”:“16.0.1.1”}

app":“mail”,“method”:“GET”,“url”:"/index.php/apps/mail/api/accounts/8/folders/SU5CT1g%3D/sync?syncToken=VTc3LFYxMzQ1NTkxMzEzLE02&uids[]=76&uids[]=68&uids[]=65&uids[]=64&uids[]=63&uids[]=62",“message”:{“Exception”:“Horde_Imap_Client_Exception”,“Message”:“Error when communicating with the mail server.”,“Code”:12,“Trace”:[{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4545,“function”:“read”,“class”:“Horde_Imap_Client_Socket_Connection_Socket”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4317,“function”:"_getLine",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[]},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4245,“function”:"_sendCmdChunk",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[]},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},[{“debug”:[],“literalplus”:true,“literal8”:false,“on_error”:null,“on_success”:null,“pipeline”:{“data”:{“modseqs”:[],“modseqs_nouid”:[]},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},“response”:{“tag”:“4”,“responseCode”:{“data”:[],“code”:“READ-ONLY”,“class”:“stdClass”},“status”:4,“token”:{“class”:“Horde_Imap_Client_Tokenize”},“class”:“Horde_Imap_Client_Interaction_Server_Tagged”},“tag”:“4”,“class”:“Horde_Imap_Client_Interaction_Command”}]]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:1234,“function”:"_sendCmd",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[]},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:1051,“function”:"_openMailbox",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},1]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:2808,“function”:“openMailbox”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},1]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Data/Sync.php",“line”:244,“function”:“vanished”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},1,{“ids”:{“duplicates”:false,“class”:“Horde_Imap_Client_Ids”}}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:3634,“function”:"__construct",“class”:“Horde_Imap_Client_Data_Sync”,“type”:"->",“args”:[{“cacheFields”:{“9”:“HICenv”,“10”:“HICflags”,“8”:“HIChdrs”,“11”:“HICdate”,“12”:“HICsize”,“1”:“HICstruct”},“changed”:true,“statuscache”:true,“class”:“Horde_Imap_Client_Socket”},{“class”:“Horde_Imap_Client_Mailbox”},{“U”:“77”,“V”:“1345591313”,“M”:“6”},{“U”:77,“V”:1345591313,“M”:6},64,{“duplicates”:false,“class”:“Horde_Imap_Client_Ids”}]},{“file”:"/var/www/nextcloud/apps/mail/lib/IMAP/Sync/Synchronizer.php",“line”:61,“function”:“sync”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},“U77,V1345591313,M6”,{“ids”:{“duplicates”:false,“class”:“Horde_Imap_Client_Ids”}}]},{“file”:"/var/www/nextcloud/apps/mail/lib/Service/MailManager.php",“line”:110,“function”:“sync”,“class”:“OCA\Mail\IMAP\Sync\Synchronizer”,“type”:"->",“args”:[{“cacheFields”:{“9”:“HICenv”,“10”:“HICflags”,“8”:“HIChdrs”,“11”:“HICdate”,“12”:“HICsize”,“1”:“HICstruct”},“changed”:true,“statuscache”:true,“class”:“Horde_Imap_Client_Socket”},{“class”:“OCA\Mail\IMAP\Sync\Request”}]},{“file”:"/var/www/nextcloud/apps/mail/lib/Controller/FoldersController.php",“line”:102,“function”:“syncMessages”,“class”:“OCA\Mail\Service\MailManager”,“type”:"->",“args”:[{“class”:“OCA\Mail\Account”},{“class”:“OCA\Mail\IMAP\Sync\Request”}]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",“line”:166,“function”:“sync”,“class”:“OCA\Mail\Controller\FoldersController”,“type”:"->",“args”:[8,“SU5CT1g=”,“VTc3LFYxMzQ1NTkxMzEzLE02”,[“76”,“68”,“65”,“64”,“63”,“62”]]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",“line”:99,“function”:“executeController”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:"->",“args”:[{“class”:“OCA\Mail\Controller\FoldersController”},“sync”]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/App.php",“line”:126,“function”:“dispatch”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:"->",“args”:[{“class”:“OCA\Mail\Controller\FoldersController”},“sync”]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php",“line”:47,“function”:“main”,“class”:“OC\AppFramework\App”,“type”:"::",“args”:[“OCA\Mail\Controller\FoldersController”,“sync”,{“class”:“OC\AppFramework\DependencyInjection\DIContainer”},{“accountId”:“8”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“function”:"__invoke",“class”:“OC\AppFramework\Routing\RouteActionHandler”,“type”:"->",“args”:[{“accountId”:“8”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“file”:"/var/www/nextcloud/lib/private/Route/Router.php",“line”:297,“function”:“call_user_func”,“args”:[{“class”:“OC\AppFramework\Routing\RouteActionHandler”},{“accountId”:“8”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“file”:"/var/www/nextcloud/lib/base.php",“line”:975,“function”:“match”,“class”:“OC\Route\Router”,“type”:"->",“args”:["/apps/mail/api/accounts/8/folders/SU5CT1g%3D/sync"]},{“file”:"/var/www/nextcloud/index.php",“line”:42,“function”:“handleRequest”,“class”:“OC”,“type”:"::",“args”:[]}],“File”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket/Connection/Socket.php",“Line”:213,“CustomMessage”:"–"},“userAgent”:“Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0”,“version”:“16.0.1.1”}

app":“mail”,“method”:“GET”,“url”:"/index.php/apps/mail/api/accounts/9/folders/SU5CT1g%3D/sync?syncToken=VTEzMyxWMTUxNjAxODg3OSxNMzQ%3D&uids[]=132&uids[]=117&uids[]=83&uids[]=81&uids[]=78&uids[]=76&uids[]=74&uids[]=72&uids[]=71&uids[]=70&uids[]=69&uids[]=68&uids[]=67&uids[]=66&uids[]=65&uids[]=64&uids[]=63&uids[]=62&uids[]=61&uids[]=60&uids[]=57",“message”:{“Exception”:“Horde_Imap_Client_Exception”,“Message”:“Error when communicating with the mail server.”,“Code”:12,“Trace”:[{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4545,“function”:“read”,“class”:“Horde_Imap_Client_Socket_Connection_Socket”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4317,“function”:"_getLine",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:4245,“function”:"_sendCmdChunk",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},[{“debug”:[],“literalplus”:true,“literal8”:false,“on_error”:null,“on_success”:null,“pipeline”:{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},“response”:{“tag”:“2”,“responseCode”:null,“status”:4,“token”:{“class”:“Horde_Imap_Client_Tokenize”},“class”:“Horde_Imap_Client_Interaction_Server_Tagged”},“tag”:“2”,“class”:“Horde_Imap_Client_Interaction_Command”}]]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:232,“function”:"_sendCmd",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[{“debug”:[],“literalplus”:true,“literal8”:false,“on_error”:null,“on_success”:null,“pipeline”:{“data”:{“modseqs”:[],“modseqs_nouid”:[],“capability_set”:true},“fetch”:{“class”:“Horde_Imap_Client_Fetch_Results”},“class”:“Horde_Imap_Client_Interaction_Pipeline”},“response”:{“tag”:“2”,“responseCode”:null,“status”:4,“token”:{“class”:“Horde_Imap_Client_Tokenize”},“class”:“Horde_Imap_Client_Interaction_Server_Tagged”},“tag”:“2”,“class”:“Horde_Imap_Client_Interaction_Command”}]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:654,“function”:"_initCapability",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:962,“function”:"_capability",“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[“LANGUAGE”]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:929,“function”:“setLanguage”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket.php",“line”:556,“function”:"_loginTasks",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:["*** sensitive parameters replaced "]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:838,“function”:"_login",“class”:“Horde_Imap_Client_Socket”,“type”:"->",“args”:[" sensitive parameters replaced "]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:1598,“function”:“login”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[" sensitive parameters replaced ***"]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:4038,“function”:“status”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},8713]},{“file”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Base.php",“line”:3632,“function”:"_syncStatus",“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”}]},{“file”:"/var/www/nextcloud/apps/mail/lib/IMAP/Sync/Synchronizer.php",“line”:61,“function”:“sync”,“class”:“Horde_Imap_Client_Base”,“type”:"->",“args”:[{“class”:“Horde_Imap_Client_Mailbox”},“U133,V1516018879,M34”,{“ids”:{“duplicates”:false,“class”:“Horde_Imap_Client_Ids”}}]},{“file”:"/var/www/nextcloud/apps/mail/lib/Service/MailManager.php",“line”:110,“function”:“sync”,“class”:“OCA\Mail\IMAP\Sync\Synchronizer”,“type”:"->",“args”:[{“cacheFields”:{“9”:“HICenv”,“10”:“HICflags”,“8”:“HIChdrs”,“11”:“HICdate”,“12”:“HICsize”,“1”:“HICstruct”},“changed”:true,“statuscache”:true,“class”:“Horde_Imap_Client_Socket”},{“class”:“OCA\Mail\IMAP\Sync\Request”}]},{“file”:"/var/www/nextcloud/apps/mail/lib/Controller/FoldersController.php",“line”:102,“function”:“syncMessages”,“class”:“OCA\Mail\Service\MailManager”,“type”:"->",“args”:[{“class”:“OCA\Mail\Account”},{“class”:“OCA\Mail\IMAP\Sync\Request”}]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",“line”:166,“function”:“sync”,“class”:“OCA\Mail\Controller\FoldersController”,“type”:"->",“args”:[9,“SU5CT1g=”,“VTEzMyxWMTUxNjAxODg3OSxNMzQ=”,[“132”,“117”,“83”,“81”,“78”,“76”,“74”,“72”,“71”,“70”,“69”,“68”,“67”,“66”,“65”,“64”,“63”,“62”,“61”,“60”,“57”]]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",“line”:99,“function”:“executeController”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:"->",“args”:[{“class”:“OCA\Mail\Controller\FoldersController”},“sync”]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/App.php",“line”:126,“function”:“dispatch”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:"->",“args”:[{“class”:“OCA\Mail\Controller\FoldersController”},“sync”]},{“file”:"/var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php",“line”:47,“function”:“main”,“class”:“OC\AppFramework\App”,“type”:"::",“args”:[“OCA\Mail\Controller\FoldersController”,“sync”,{“class”:“OC\AppFramework\DependencyInjection\DIContainer”},{“accountId”:“9”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“function”:"__invoke",“class”:“OC\AppFramework\Routing\RouteActionHandler”,“type”:"->",“args”:[{“accountId”:“9”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“file”:"/var/www/nextcloud/lib/private/Route/Router.php",“line”:297,“function”:“call_user_func”,“args”:[{“class”:“OC\AppFramework\Routing\RouteActionHandler”},{“accountId”:“9”,“folderId”:“SU5CT1g=”,"_route":“mail.folders.sync”}]},{“file”:"/var/www/nextcloud/lib/base.php",“line”:975,“function”:“match”,“class”:“OC\Route\Router”,“type”:"->",“args”:["/apps/mail/api/accounts/9/folders/SU5CT1g%3D/sync"]},{“file”:"/var/www/nextcloud/index.php",“line”:42,“function”:“handleRequest”,“class”:“OC”,“type”:"::",“args”:[]}],“File”:"/var/www/nextcloud/apps/mail/vendor/pear-pear.horde.org/Horde_Imap_Client/Horde/Imap/Client/Socket/Connection/Socket.php",“Line”:213,“CustomMessage”:"–"},“userAgent”:“Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0”,“version”:“16.0.1.1”}

HELP ?

10MB in 24 hours I find exaggerated -.-

My english is unfortunately bad

Please THX

This happens when your Nextcloud can’t connect to the mail server or the mail server returns an error.

HELLO THX

But it works ?
I have several e-mail addresses
Is that the problem?

I see that
accounts/7/folders
accounts/8/folders
accounts/9/folders
accounts/2/folders
accounts/4/folders
accounts/5/folders
accounts/4/folders
accounts/5/folders
accounts/2/folders
accounts/9/folders
accounts/7/folders

Thank you for helping me

HI

he is too fast ?
the query of the API …?
OR
Are there too many mails acc ?

Can I do something there?

THX

The URL is always the same. This happens when the Mail app checks for changes in the background while you have to browser window open. You do not notice that one failing request because the next ones will work again. There isn’t much for you to do. The Mail app just needs better error handling. This is a known issue.

1 Like

THX
OK then I can not do anything ^ ^
Waiting and drinking tea THANK YOU

1 Like

I assume that the APP needs the user data of the browser ?
why is not stored permanently?

Yes, the app checks for changes on IMAP. Thus you’ll get your new messages without a manual reload and changes from other clients (e.g. your phone) propagate to the browser state.