After trying many solutions on the forum I am still unable to send email after last update. I am using v5.7.62-C145 and my env file appears ok, etc. I am seeing this error in the logs:
production.ERROR: Call to undefined function App\Models\mb_ereg_replace() {“exception”:"[object] (Error(code: 0): Call to undefined function App\Models\mb_ereg_replace() at /usr/share/nginx/invoiceninja/app/Models/BaseModel.php:267)
"} Could this be related to my issue?