Error In Magento 2.2.5 with Plazathemes theme.

[Ashish Kacha]

Frontend Error:

1 exception(s):
Exception #0 (Magento\Framework\Config\Dom\ValidationException): Element 'referenceContainer', attribute 'after': The attribute 'after' is not allowed.
Line: 764

Element 'body': This element is not expected. Expected is one of ( attribute, block, referenceBlock, referenceContainer, container, move, uiComponent ).
Line: 865


Exception #0 (Magento\Framework\Config\Dom\ValidationException): Element 'referenceContainer', attribute 'after': The attribute 'after' is not allowed.
Line: 764

Element 'body': This element is not expected. Expected is one of ( attribute, block, referenceBlock, referenceContainer, container, move, uiComponent ).
Line: 865

Backend Error:

1 exception(s):
Exception #0 (LogicException): Could not create an acl object: Invalid Document 
Element 'resource': The attribute 'title' is required but missing.
Line: 5

Element 'resource': The attribute 'title' is required but missing.
Line: 6

Element 'resource': The attribute 'title' is required but missing.
Line: 7

Element 'resource': The attribute 'title' is required but missing.
Line: 8


Exception #0 (LogicException): Could not create an acl object: Invalid Document 
Element 'resource': The attribute 'title' is required but missing.
Line: 5

Element 'resource': The attribute 'title' is required but missing.
Line: 6

Element 'resource': The attribute 'title' is required but missing.
Line: 7

Element 'resource': The attribute 'title' is required but missing.
Line: 8

[Manish Mittal]

@Ashish Kacha

Front:

I think, You are using magento2.2 version. In this version, There is some modification in layout xml. You can not use after and before attribute in referenceContainer tag.

To solve this issue, You have to remove after and before attribute from referenceContainer.

you can use move tag for rearranging layout

    <move element="element name" destination="where you want to move" after="">

Admin

In your /magento-root/app/code/Plazathemes/Themeoptions/etc/acl.xml file replace

<resource id="plazathemes_themeoptions::config" title="Themeoptions" />

with

<resource id="Plazathemes_Themeoptions::config" title="Themeoptions" />

Magento is looking for the id attribute with CamelCase value, which in your case seems not satisfying.