I get the following warning whenever I do a SQL call to a MySQL database
07:36:46 WARNING [cache] Failed to save key "%5B%5BC%5DAppBundle%5CEntity%5CBusinessUnit%24_maxid%5D%5B1%5D" (integer)
["key" => "%5B%5BC%5DAppBundle%5CEntity%5CBusinessUnit%24_maxid%5D%5B1%5D","type" => "integer","exception" => ErrorException { …}] []
What is the cause of this warning?
How serious is it?
How can I prevent it?
I'm using a nginx server and the Symfony 3.3.5@stable framework.
Edit
This works fine in development and only gives these errors on the production server.
I managed to solve it by prefixing sudo to the command that I was calling. Thanks everyone for your help.
It is permission of the folder. On Ubuntu in the folder of project:
sudo chmod 700 -R var/