Unable to update

Hello,
I tried to update projeqtor from 6.0.5 to a higher version. After unzip the sources in the directory (I accept all new files), I cannot log with the admin account. I Have the following error in the logs.

2017-08-17 17:41:41.029 ===== TRACE ===== DISCONNECTED USER 'admin'
2017-08-17 17:41:52.050 ===== TRACE =====
2017-08-17 17:41:52.050 ===== TRACE ===== =====================================
2017-08-17 17:41:52.050 ===== TRACE =====
2017-08-17 17:41:52.050 ===== TRACE ===== DataBase actual Version = V6.0.5
2017-08-17 17:41:52.051 ===== TRACE ===== ProjeQtOr actual Version = V6.0.6
2017-08-17 17:41:52.051 ===== TRACE =====
2017-08-17 17:41:52.051 ===== TRACE ===== =====================================
2017-08-17 17:41:52.051 ===== TRACE =====
2017-08-17 17:41:52.051 ===== TRACE ===== VERSION V6.0.6
2017-08-17 17:41:52.051 ===== TRACE =====
2017-08-17 17:41:52.054 ***** ERROR ***** EXCEPTION *****
2017-08-17 17:41:52.054 ***** ERROR ***** on file '/var/www/html/projeqtor/model/persistence/Sql.php' at line (144)
2017-08-17 17:41:52.054 ***** ERROR ***** cause = SQLSTATE[55000]: Object not in prerequisite state: 7
2017-08-17 17:41:52.054 ***** ERROR ***** => #0 /var/www/html/projeqtor/model/persistence/Sql.php (144) -> lastInsertId()
2017-08-17 17:41:52.055 ***** ERROR ***** => #1 /var/www/html/projeqtor/db/maintenanceFunctions.php (71) -> query()
2017-08-17 17:41:52.055 ***** ERROR ***** => #2 /var/www/html/projeqtor/db/maintenance.php (101) -> runScript()
2017-08-17 17:41:52.055 ***** ERROR ***** => #3 /var/www/html/projeqtor/tool/loginCheck.php (135) -> include()

Thanks for your help.