I receive this page when I try to start the project
This happened suddenly while C: was running out of Disk Space.
I created space in C: but the problem remains the same.

SQLSTATE[HY000] [2002] Aucune connexion n’a pu être établie car l’ordinateur cible l’a expressément refusée.

( ! ) Fatal error: Call to a member function query() on a non-object in C:wampwwwprojeqtorprojeqtormodelpersistenceSql.php on line 92
Call Stack
# Time Memory Function Location
1 0.0075 1275520 {main}( ) ..main.php:0
2 0.0207 2875104 require_once( 'C:wampwwwprojeqtorprojeqtortoolprojeqtor.php' ) ..main.php:37
3 0.0455 7093456 Parameter::getGlobalParameter( ) ..projeqtor.php:102
4 0.0456 7095656 SqlElement->getSqlElementsFromCriteria( ) ..Parameter.php:801
5 0.0467 7276320 Sql::query( ) ..SqlElement.php:1943