$this->flashmessenger()->getMessages() got error : "Container cannot write to storage due to type mismatch" for 2.1.1

[samsonasik]

When I use $this->flashmessenger()->getMessages() for 2.1.1 there is error :

Container cannot write to storage due to type mismatch

in

/Users/abdulmalikikhsan/www/zf21_learn/vendor/zendframework/zendframework/library/Zend/Session/AbstractContainer.php:202

It just work for 2.1.0

[mwillbanks]

I am looking into this; not quite certain why it is happening yet; but diagnosing it none the less.

[mwillbanks]

I believe that this was due to a session that was previously created; all new sessions should not show this issue. This is because the contract for session containers used to require an array or an instanceof an ArrayObject; now it is an array or an instance of a Zend\Stdlib\ArrayObject. I believe that we can make a change to allow anything that is Traversable that does not have any harmful side effects.

[mwillbanks]

@weierophinney please let me know if this is something we should do... might cause people already with production apps to have to reset all of their sessions 👎

[samsonasik]

Oops, there is my old session, issue closed. sorry ;)

[mwillbanks]

It would actually be good to keep this issue open as it is more or less an upgrade bug.

[pawelnowak]

Hello there,

I'm struggling with the same issue - after updating to 2.1.1 my application stopped working. How do I approach this without editing the ZF's code? Should I start retrieving my flash messages in a different way?

[mwillbanks]

@pawelnowak without editing ZF's code; remove all php sessions and force them to recreate a session. There is a fix in progress; I have a working branch but it has to execute it's unit tests as well as be reviewed.

[samsonasik]

@mwillbanks ok, i re-open it

[pawelnowak]

@mwillbanks, your solution worked, thanks.