exception 'RedisException' with message '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.' in /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Engine/RedisEngine.php:148
Stack trace:
#0 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Engine/RedisEngine.php(148): Redis->setex('queries_courses...', 86400, '\x00\x00\x00\x02\x15\x06\x99\x08"\xDA\x00\x08"\xDD\x00...')
#1 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Cache.php(347): RedisEngine->write('queries_courses...', Array, 86400)
#2 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Cache.php(630): Cache::write('courses_index_p...', Array, 'courses')
#3 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Plugin/Course/Controller/CoursesController.php(2572): Cache::remember('courses_index_p...', Object(Closure), 'courses')
#4 [internal function]: CoursesController->{closure}()
#5 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Cache.php(629): call_user_func(Object(Closure))
#6 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Plugin/Course/Controller/CoursesController.php(2591): Cache::remember('courses_index_p...', Object(Closure), 'courses')
#7 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Plugin/Course/Controller/CoursesController.php(1509): CoursesController->_paginateCoursesOptimized(Array, 'courses_index')
#8 [internal function]: CoursesController->index()
#9 /var/www/vhosts/pdf.ibb.com/httpdocs/libs/cakephp-2.4.6/lib/Cake/Controller/Controller.php(490): ReflectionMethod->invokeArgs(Object(CoursesController), Array)
#10 /var/www/vhosts/pdf.ibb.com/httpdocs/libs/cakephp-2.4.6/lib/Cake/Routing/Dispatcher.php(185): Controller->invokeAction(Object(CakeRequest))
#11 /var/www/vhosts/pdf.ibb.com/httpdocs/libs/cakephp-2.4.6/lib/Cake/Routing/Dispatcher.php(160): Dispatcher->_invoke(Object(CoursesController), Object(CakeRequest), Object(CakeResponse))
#12 /var/www/vhosts/pdf.ibb.com/httpdocs/app/webroot/index.php(108): Dispatcher->dispatch(Object(CakeRequest), Object(CakeResponse))
#13 {main}BYEW<br />
<b>Fatal error</b>:  Uncaught exception 'RedisException' with message '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.' in /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Engine/RedisEngine.php:148
Stack trace:
#0 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Engine/RedisEngine.php(148): Redis-&gt;setex('persistent__cak...', 86313600, '\x00\x00\x00\x02\x14\x90\x11\tConfigu...')
#1 /var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Cache.php(347): RedisEngine-&gt;write('persistent__cak...', Array, 86313600)
#2 /var/www/vhosts/pdf.ibb.com/httpdocs/libs/cakephp-2.4.6/lib/Cake/Core/App.php(897): Cache::write('file_map', Array, '_cake_core_')
#3 [internal function]: App::shutdown()
#4 {main}
  thrown in <b>/var/www/vhosts/pdf.ibb.com/httpdocs/app/Lib/Cache/Engine/RedisEngine.php</b> on line <b>148</b><br />