Migration error AdminController.php

[vzex]

Am able to access back office but not my pages after migration I get the following error. Thought I'd post before wiping and starting over hopefully it can be fixed. Could not roll back either.

Warning on line 2169 in file /home1/xxxx/publichtml/shop/classes/controller/AdminController.php [2] Cannot modify header information - headers already sent by (output started at /home1/xxxx/publichtml/shop/classes/Rijndael.php:102)

Line 2169:

header('Cache-Control: no-store, no-cache');

PS Found thirtybees looking for a fix to the PS plain text password email! Hi glad to bee here :)

[vzex]

There is no PSDEVMODE in file /config/defines.inc.php

I get this error on the maintenance page: x Warning: mcryptdecrypt(): The IV parameter must be as long as the blocksize in /home1/xxxx/publichtml/shop/classes/Rijndael.php on line 102

Warning: Cannot modify header information - headers already sent by (output started at /home1/xxxx/publichtml/shop/classes/Tools.php:1) in /home1/xxxx/publichtml/shop/classes/controller/FrontController.php on line 574

Keep getting sent to login which doesn't work but will send new log in email can only access BO if I click back pages I get this error on modules page:

Warning on line 2169 in file /home1/xxxx/publichtml/shop/classes/controller/AdminController.php [2] Cannot modify header information - headers already sent by (output started at /home1/xxxx/publichtml/shop/classes/Rijndael.php:102)

Notice on line 31 in file /home1/xxxx/publichtml/shop/modules/blockrss/blockrss.php [8] Use of undefined constant _PSPEARXMLPARSERPATH - assumed 'PSPEARXMLPARSERPATH'

Warning on line 31 in file /home1/xxxx/publichtml/shop/modules/blockrss/blockrss.php [2] includeonce(PSPEARXMLPARSERPATHParser.php): failed to open stream: No such file or directory

Warning on line 31 in file /home1/xxxx/publichtml/shop/modules/blockrss/blockrss.php [2] includeonce(): Failed opening 'PSPEARXMLPARSERPATHParser.php' for inclusion (includepath='/home1/xxxx/publichtml/shop/vendor/pear/pearexception:/home1/xxxx/publichtml/shop/vendor/pear/consolegetopt:/home1/xxxx/publichtml/shop/vendor/pear/pear-core-minimal/src:/home1/xxxx/publichtml/shop/vendor/pear/archivetar:.:/opt/php55/lib/php')

Also got error 500 trying a fresh install :(

Any guidance appreciated! Thanks!

[vzex]

My host sorted it out referring me with this reply:

I was able to get rid of the error by doing the following suggestion from the prestashop forum: https://www.prestashop.com/forums/topic/523540-cant-log-in-to-backoffice/#entry2312009

Love how fast it runs without all the advert bloat!

Thanks for the reply!