Dashboard problem on login

Your software
My Mautic version is: 3.2.4
My PHP version is: 7.3.28
My Database type and version is: MySQL

Your problem
My problem is: When I login to Mautic, I’m brought to the dashboard, https://mautic.xx.org/s/dashboard. However, instead of seeing my dashboard, I’m treated to text of the order,
{“activeLink”:"#mautic_dashboard_index",“mauticContent”:“dashboard”,“route”:"/s/dashboard",“flashes”:"",“notifications”:{“content”:"\n",“lastId”:null,“hasNewNotifications”:false,“updateAvailable”:true},“browserNotifications”:,“newContent”:"\n\u003Cdiv class=\u0022content-body\u0022\u003E\n \n\u003Cdiv class=\u0022page-header\u0022\u003E\n \u003Cdiv class=\u0022box-layout\u0022\u003E\n \u003Cdiv class=\u0022col-xs-5 col-sm-6 col-md-5 va-m\u0022\u003E\n \u003Ch3 class=\u0022pull-left\u0022\u003EDashboard\u003C/h3\u003E\n \u003Cdiv class=\u0022col-xs-2 text-right pull-left\u0022\u003E\n \u003C/div\u003E\n \

That is not the full text, but I assume that it will look familiar enough for someone to recognize the problem. I can get past the problem by going to https://mautic.xx.org/s/contacts, after which, I’m able to see the dashboard with no issues.

Is anyone familiar with this problem?

These errors are showing in the log:

Steps I have tried to fix the problem:

I might be wrong here, but it seems you have some unicode encoded content there. I would pursue the path from here.