No operation which satisfies the runtime constraints found for "context" - neoscms

Question

I am having neos with version 1.1.0 beta1
When i try to change page layout
I got below error
Failed to render element
pagetwocolum<TYPO3.Neos:Page>/
body<TYPO3.TypoScript:Template>/
content/
main<TYPO3.Neos:PrimaryContent>/
default<TYPO3.TypoScript:Matcher>/
element<TYPO3.Neos:ContentCollection>/
__meta/
cache/
maximumLifetime
No operation which satisfies the runtime constraints found for "context". (20140614122525674a6d)
and in log it says
flow/Data/Temporary/Production/Cache/Code/Flow_Object_Classes/TYPO3_Eel_FlowQuery_FlowQuery.php: No operation which satisfies the runtime constraints found for "context".
Could you please let me know what causes this issue?

Answer 1

Most probably you are rendering a missing ContentCollection node for the layout pagetwocolumn. There's a fix in the latest stable version (1.1.2) that gives a better error message if that problem occurs (see https://jira.typo3.org/browse/NEOS-150). With that version you should get a better error message pointing you to a solution.
What's happening in the background is, that the TYPO3.Neos:ContentCollection object needs a node of type TYPO3.Neos:ContentCollection on the given nodePath (e.g. main). You can add these missing nodes (if they are configured as a childNode) with the following command (if your page is of type TYPO3.Neos.NodeTypes:Page):
./flow node:autocreatechildnodes --node-type TYPO3.Neos.NodeTypes:Page
Have a look at this documentation page for more information about ContentCollections and how to configure childNode: http://docs.typo3.org/neos/TYPO3NeosDocumentation/1.1/IntegratorsCookbook/EditableSharedFooter.html