Open Email Track gif not working on gmail

Development
1

Mautic is showing 404 error https://ci6.googleusercontent.com/proxy/OwK2UFwzBnsppljFfp7xdFpzCfic2UQ-tFhewBmdAfw9uF0f0wwGyeH-Yf7wm1LA3IzAN4aHcTZIectuVE6l88HiWeUBXaYA2HxrDNFI8LI=s0-d-e1-ft#http://mautic/email/5979adeee3680.gif.

When loading image in Network .



and the other one in mautic log is

mautic.WARNING: PHP Warning - PDOStatement::execute(): Error reading result set’s header - in file /var/www/html/mautic/vendor/doctrine/dbal/lib/$l/lib/Doctrine/DBAL/Driver/PDOStatement.php - at line 91

2

Mautic is showing 404 error https://ci6.googleusercontent.com/proxy/OwK2UFwzBnsppljFfp7xdFpzCfic2UQ-tFhewBmdAfw9uF0f0wwGyeH-Yf7wm1LA3IzAN4aHcTZIectuVE6l88HiWeUBXaYA2HxrDNFI8LI=s0-d-e1-ft#http://mautic/email/5979adeee3680.gif.
When loading image in Network .

and the other one in mautic log is
mautic.WARNING: PHP Warning - PDOStatement::execute(): Error reading result set’s header - in file /var/www/html/mautic/vendor/doctrine/dbal/lib/$l/lib/Doctrine/DBAL/Driver/PDOStatement.php - at line 91