Error 500 on settings due to old mongodb feature used

[vcorreze]

I installed yawik as test on an ubuntu bionic beaver machine (18.04 LTS).

Install and config went fine, but everytime I tried to go to the 'settings' view, I obtained an error 500.

After some research, i found in log/tracy/exception.log the following line :
MongoWriteConcernException: localhost:27017: Unknown modifier: $pushAll #9 in (...)yawik/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/collection.php:1442 @ http://localhost:4567/fr/settings

The following issue explains that $pushAll was deprecated in MongoDB 3.6 wich is installed by default in bionic.

[mbo-s]

see #471

[vcorreze]

Ok, so I close this duplicate.