I also came across an error on the "Outgoing Logs" (or default Logs) page at ?app=awsses&module=system&controller=logs.
Error: Call to undefined function IPS\awsses\modules\admin\system\imap_mime_header_decode() (0)
#0 /data/system/Helpers/Table/Db.php(442): IPS\awsses\modules\admin\system\_logs->IPS\awsses\modules\admin\system\{closure}()
#1 /data/system/Helpers/Table/Table.php(489): IPS\Helpers\Table\_Db->getRows()
#2 /data/system/Theme/Theme.php(860) : eval()'d code(1956): IPS\Helpers\Table\_Table->__toString()
#3 /data/system/Theme/SandboxedTemplate.php(61): IPS\Theme\class_core_admin_global->globalTemplate()
#4 /data/system/Dispatcher/Dispatcher.php(173): IPS\Theme\_SandboxedTemplate->__call()
#5 /data/system/Dispatcher/Standard.php(113): IPS\_Dispatcher->finish()
#6 /data/system/Dispatcher/Dispatcher.php(155): IPS\Dispatcher\_Standard->finish()
#7 /data/admin/index.php(13): IPS\_Dispatcher->run()
#8 {main}
Backtrace
#0 /data/init.php(1005): IPS\_Log::log()
#1 /data/system/Helpers/Table/Table.php(573): IPS\IPS::exceptionHandler()
#2 /data/system/Theme/Theme.php(860) : eval()'d code(1956): IPS\Helpers\Table\_Table->__toString()
#3 /data/system/Theme/SandboxedTemplate.php(61): IPS\Theme\class_core_admin_global->globalTemplate()
#4 /data/system/Dispatcher/Dispatcher.php(173): IPS\Theme\_SandboxedTemplate->__call()
#5 /data/system/Dispatcher/Standard.php(113): IPS\_Dispatcher->finish()
#6 /data/system/Dispatcher/Dispatcher.php(155): IPS\Dispatcher\_Standard->finish()
#7 /data/admin/index.php(13): IPS\_Dispatcher->run()
#8 {main}
Entries in awsses_mail_logs
1 1642292499 0110017e6042d1a1-94f54a48-7ac6-41b1-8fcf-a0e260488e9d-000000 NULL {"Destination":{"ToAddresses":["complaint@simulator.amazonses.com"]},"ReplyToAddresses":["forum@multitheftauto.com"],"Source":"=?UTF-8?B?TXVsdGkgVGhlZnQgQXV0bzogRm9ydW1z?= <forum@multitheftauto.com>","Message":{"Body":{"Text":{"Charset":"UTF-8","Data":"\n\n\n\nThis email confirms that your email settings are configured correctly.\n\n-----\n\n\n\n\nMulti Theft Auto: Forums"}},"Subject":{"Charset":"UTF-8","Data":"Test Email"}},"ConfigurationSet":""} NULL
2 1642292504 0110017e6042e6b5-6ff0b16a-3d13-42f2-ab4e-91a96192a25c-000000 NULL {"Destination":{"ToAddresses":["bounce@simulator.amazonses.com"]},"ReplyToAddresses":["forum@multitheftauto.com"],"Source":"=?UTF-8?B?TXVsdGkgVGhlZnQgQXV0bzogRm9ydW1z?= <forum@multitheftauto.com>","Message":{"Body":{"Text":{"Charset":"UTF-8","Data":"\n\n\n\nThis email confirms that your email settings are configured correctly.\n\n-----\n\n\n\n\nMulti Theft Auto: Forums"}},"Subject":{"Charset":"UTF-8","Data":"Test Email"}},"ConfigurationSet":""} NULL
After truncating awsses_mail_logs table, the error goes away and the Outgoing Logs page renders again.
Specs
Invision Community 4.6.9
Database 5.5.5-10.6.5-MariaDB-1:10.6.5+maria~focal
PHP 7.4.27
Redis Caching