MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. Please check Redis logs for details about the error. (500 Internal Error)

at ()
in /kanon/src/mvc-controller/controllerPrototype2.php line 772 ...
at session_write_close()
in /kanon/src/mvc-controller/controllerPrototype2.php line 772 ...
at controllerPrototype2->__init(null)
in /kanon/src/mvc-controller/controllerPrototype2.php line 810 ...
at controllerPrototype2->__run(null)
in /kanon/src/mvc-controller/controllerPrototype2.php line 823 ...
at controllerPrototype2->run()
in /kanon/src/mvc-controller/application.php line 31 ...
at application::run('cityapp')
in /kanon/src/common/kanon.php line 256 ...
at kanon::run('cityapp', '/')
in /bootstrap.php line 1422 ...

500 Internal Error - RedisException