"SQLSTATE No such file or directory" Error When Server Actions are Invoked on Production Server

Wappler 3.0.0 rc2

I’ve uploaded my design to my AWS server in the way I normally do, but this time none of my server actions which access the database are working… I’m getting the following message:

Below is the detail of the trace.

All the files it mentions are present on the server…

I can log into the database okay from the server…

Can someone point me to what the issue may be please?

Thanks,
Antony.

#0 /var/app/current/dmxConnectLib/lib/db/Connection.php(81): PDO->__construct('mysql:host=loca...', 'root', '', Array)↵
#1 /var/app/current/dmxConnectLib/modules/dbconnector.php(12): lib\db\Connection->__construct(Object(lib\App), Object(stdClass))↵
#2 /var/app/current/dmxConnectLib/lib/App.php(173): modules\dbconnector->connect(Object(stdClass), 'db_write')↵
#3 /var/app/current/dmxConnectLib/lib/App.php(137): lib\App->execSteps(Object(stdClass))↵
#4 /var/app/current/dmxConnectLib/lib/App.php(107): lib\App->execSteps(Array)↵
#5 /var/app/current/dmxConnectLib/lib/App.php(72): lib\App->exec(Object(stdClass))↵
#6 /var/app/current/dmxConnect/api/prices/update_price_contact_list.php(8): lib\App->define(Object(stdClass))↵
#7 {main}