Exception: Error at /usr/local/opnsense/mvc/app/models/OPNsense/Base/Menu/MenuSystem.php:274

[soleilblanc99]

Since the upgrade to 20.7 (from latest 20.1) I'm receiving the following error (at the /index.php url)

[04-Aug-2020 21:39:29 America/Toronto] Exception: Error at /usr/local/opnsense/mvc/app/models/OPNsense/Base/Menu/MenuSystem.php:274 - Undefined index: enc0 (errno=8) in /usr/local/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php:87 Stack trace: #0 /usr/local/opnsense/mvc/app/models/OPNsense/Base/Menu/MenuSystem.php(274): OPNsense\Base\ApiControllerBase->APIErrorHandler(8, 'Undefined index...', '/usr/local/opns...', 274, Array) #1 /usr/local/opnsense/mvc/app/controllers/OPNsense/Core/Api/MenuController.php(105): OPNsense\Base\Menu\MenuSystem->__construct() #2 /usr/local/opnsense/mvc/app/controllers/OPNsense/Core/Api/MenuController.php(185): OPNsense\Core\Api\MenuController->getMenu(NULL) #3 [internal function]: OPNsense\Core\Api\MenuController->searchAction() #4 [internal function]: Phalcon\Dispatcher->callActionMethod(Object(OPNsense\Core\Api\MenuController), 'searchAction', Array) #5 [internal function]: Phalcon\Dispatcher->dispatch() #6 /usr/local/opnsense/www/api.php(26): Phalcon\Mvc\Application->handle() #7 {main}

Config was working correctly in previous version. This error happen everytime i log on the firewall but does not seem to be causing other problems.

Here's the system information
User-Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:79.0) Gecko/20100101 Firefox/79.0 FreeBSD 12.1-RELEASE-p7-HBSD #0 427d53bc125(stable/20.7)-dirty: Sun Jul 26 05:51:42 CEST 2020 root@sensey64:/usr/obj/usr/src/amd64.amd64/sys/SMP amd64 OPNsense 20.7 3526fcaac Plugins os-dmidecode-1.1 os-dyndns-1.22 os-intrusion-detection-content-snort-vrt-1.1 os-lldpd-1.1 os-mdns-repeater-1.0 os-ntopng-1.2 os-redis-1.1 os-sensei-1.5.2_1 os-sensei-updater-1.5.1 os-smart-2.1 os-sunnyvalley-1.2 os-theme-cicada-1.24 os-zabbix-agent-1.7 Time Tue, 04 Aug 2020 21:39:30 -0400 OpenSSL 1.1.1g 21 Apr 2020 PHP 7.3.20

Hardware:
Intel(R) Pentium(R) CPU G4560 @ 3.50GHz (4 cores)', Shuttle DH-110, 8GB RAM, 500GB ssd

Let me know what testing or log files are required. I've used the submit report option from the UI as well.

Thank you