Communications link failure

Good morning,

Since yesterday my Looker Studio connection to my Mysql database no longer works. Except I haven't changed anything, the database is not IP protected, so all IPs can connect to it.

Do you have any idea why there is this error? THANKS

Dataset configuration error
Looker Studio cannot connect to your dataset.

Unable to connect to database. Please check your connection settings. To learn more about database connectors, click here.

Unable to connect to database: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Error ID: 97b12f04
 
0 0 331