PHP Symfony server - "An exception occurred in driver: could not find driver"

Question

I start my Symfony application named "test2" using the terminal command symfony serve (I also tried symfony server:start), and I get an error:

Exception thrown when handling an exception (Doctrine\DBAL\Exception\DriverException: An exception occurred in driver: could not find driver at /var/www/html/test2/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php line 102)

I'm using Ubuntu 20.04, PHP 7.4, Symfony CLI 4.25, and in case needed, Composer 2.0

I'm also using PostgreSQL, and I ran sudo apt-get install php-pgsql.

I checked "php.ini" as well, here's a screenshot:

This is the entire response that highlights the error(s):

[Web Server ] May 31 09:01:32 |DEBUG  | PHP    Using PHP version 7.4.18 (from default version in $PATH)
[Application] May 30 23:09:16 |CRITICA| REQUES Exception thrown when handling an exception (Doctrine\DBAL\Exception\DriverException: An exception occurred in driver: could not find driver at /var/www/html/test2/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php line 102)
[Application] May 30 23:09:16 |CRITICA| PHP    Uncaught Exception: An exception occurred in driver: could not find driver
[Application] May 30 23:16:58 |INFO   | REQUES Matched route "index". method="GET" request_uri="https://localhost:8000/" route="index" route_parameters={"_controller":"App\\Controller\\TestController::index","_route":"index"}
[Application] May 30 23:16:58 |INFO   | SECURI Populated the TokenStorage with an anonymous Token.
[Application] May 30 23:16:58 |CRITICA| REQUES Uncaught PHP Exception Doctrine\DBAL\Exception\DriverException: "An exception occurred in driver: could not find driver" at /var/www/html/test2/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php line 102
[Application] May 30 23:16:58 |CRITICA| REQUES Exception thrown when handling an exception (Doctrine\DBAL\Exception\DriverException: An exception occurred in driver: could not find driver at /var/www/html/test2/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php line 102)
[Application] May 30 23:16:58 |CRITICA| PHP    Uncaught Exception: An exception occurred in driver: could not find driver
[Application] May 30 23:16:58 |CRITICA| REQUES Uncaught PHP Exception Doctrine\DBAL\Exception\DriverException: "An exception occurred in driver: could not find driver" at /var/www/html/test2/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php line 102
[Application] May 30 23:16:58 |CRITICA| REQUES Exception thrown when handling an exception (Doctrine\DBAL\Exception\DriverException: An exception occurred in driver: could not find driver at /var/www/html/test2/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php line 102)
[Application] May 30 23:16:58 |CRITICA| PHP    Uncaught Exception: An exception occurred in driver: could not find driver
[Web Server ] May 31 09:01:32 |INFO   | PHP    listening path="/usr/sbin/php-fpm7.4" php="7.4.18" port=45197
[PHP-FPM    ] May 31 09:01:32 |NOTICE | FPM    fpm is running, pid 391
[PHP-FPM    ] May 31 09:01:32 |NOTICE | FPM    ready to handle connections
[PHP-FPM    ] May 31 09:01:32 |NOTICE | FPM    systemd monitor interval set to 10000ms

Does anyone have an idea?

Thanks in advance to any helpers :)

did you check your php.ini to see if the extension=pdo_pgsql is uncommented — Mamadou Aly Sy
– Mamadou Aly Sy, Commented May 30, 2021 at 21:44
Yes, pretty sure it's uncommented. I just added a screenshot of "php.ini". Thanks for asking. — zach
– zach, Commented May 30, 2021 at 21:54
It is not in use in the above screenshot, remove the leading ; from that line and restart you webserver and/or php-fpm — Cyclonecode
– Cyclonecode, Commented May 30, 2021 at 21:56
try to remove the semi colon at the begining and se if it work — Mamadou Aly Sy
– Mamadou Aly Sy, Commented May 30, 2021 at 21:58
Tried it, then restarted "sudo service apache2 restart", but unfortunately, still the same problem :( — zach
– zach, Commented May 30, 2021 at 22:29

zach · Accepted Answer · 2021-05-31 22:25:22Z

1

Problem solved! I removed and reinstalled PHP's PostgreSQL extension, anything linked to Symfony, and permanently removed unused PHP versions. I also surprisingly left the comments in "php.ini", didn't need to touch it. It now works.

Here's a link that explains how to remove Symfony (look at the 2nd answer with ls -al ~/.symfony, etc.): How to completely uninstall symfony and composer from a mac

To remove PHP's PostgreSQL extension: sudo apt-get --purge remove php-pgsql or sudo apt-get purge php-pgsql

And I removed unused PHP versions on my system: sudo apt-get purge 'php5.6'

To reinstall PHP's PostgreSQL extension, I entered sudo apt-get install php-pgsql

And to get Symfony again, I followed its steps here: https://symfony.com/download (for Linux)

Thanks to everyone who offered their help. I greatly appreciate it :)

edited May 31, 2021 at 22:25

answered May 31, 2021 at 22:17

zach

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Comments

Anthony · Accepted Answer · 2021-05-30 22:00:52Z

0

You probably need to remove the semicolon from that line and then restart your webserver.

Usually something like sudo service httpd restart.

answered May 30, 2021 at 22:00

Anthony

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2 Comments

zach Over a year ago

I tried it, did "sudo service apache2 restart" (tried "httpd" as well, but said it didn't exist), and I still have the same problem :(

Anthony Over a year ago

Do you know what web server you are running / os?

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