PHP Fatal error: Unsupported operand types in /var/www-sites/drupal/edg/sites/all/modules/rules/includes/faces.inc on line 226

No one is using rules on D7?
I have the same problem, maybe it's a php 5.2 issue.
this is the line:
$this->faces += class_implements($interface);

nice work

"RulesPluginFeaturesIntegrationInterace" exists in rules.features.inc, but is obviously not loaded on your site. Try to clear the cache or go to update.php to clear the class registry cache.

I'm part of the Rules Issue Squad, helping out in the issue queue. You can join, too!

Closed since no further information has been provided. Reopen if still an issue.

you are looking for this issue
http://drupal.org/node/1257580

I was looking for better place to post this patch and here seems like relevant place.

We have a patch that solved warnings for in faces.inc.

I'm working through any needed updates to land on the latest PHP7.2. The latest rules 7.x-2.x-dev fixed a bunch of my errors however I was left with one. The patch in #7 worked to straighten this out. (Thanks lachezar.valchev !) I would bet that others will hit this issue. It'd be nice to get this committed if possible.

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array_diff(): Argument #1 is not an array faces.inc:225 [warning]
class_implements(): Class RulesPluginFeaturesIntegrationInterface does not exist and could not be loaded faces.inc:229 [warning]
WD php: Error: Unsupported operand types in FacesExtendable->extend() (line 229 of /sites/all/modules/rules/includes/faces.inc). [error]
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Unsupported operand types in FacesExtendable->extend() (line 229 of /sites/all/modules/rules/includes/faces.inc).

Note that the initial issue is almost 8 years old, and #2 said "maybe it's a php 5.2 issue" ...

This is unlikely to have any connection to PHP 7.2 ... The Rules automated tests work for PHP 7.2 and detect no problem - there are no known Rules issues related to PHP 7.2.

So while I have no problem committing the patch, I do insist that we identify the problem first so that we're not just hiding the real problem with an isset() - that will just cover up the problem.

To me this appears to be a situation where the core Drupal class loader is not doing the right thing. One way that can happen is when your cache or registry needs to be rebuilt. If you've done that and still have a problem, then we need to be able to reproduce the bug on a clean install. If you can provide instructions for reproducing the error on a clean site then we can reopen this and look into the problem.

Getting the same error with the WSOD on updating to Rules 7.x-2.12.
(Not able to find 7.x-2.12 in the version drop-down for the issue)

The log entry says:

Warning: array_diff(): Argument #1 is not an array in FacesExtendable->extend() (line 229 of /var/www/html/xxx/sites/all/modules/rules/includes/faces.inc).

Have temporarily rolled back to Rules 7.x-2.11.

Note: The site seems to work fine after the update till the first cron run.

#10 Same here, going back to 2.11 + patch from #7.

Hey all, I'm getting the same error message with the 7x-2.12 update. Rolling back for now.

#3028130: Class [warning] RulesPluginFeaturesIntegrationInterface does not exist and could not be loaded faces.inc:233

Same problem here, upgrade to 2.12 killed all hosted sites.
I downgraded now to 2.11 and applied the patch from #7 which restored everything.

While having 2.12 installed and using drush shows the following error messages:

.usr.local.www.drupal7#_redacted_.de >> array_diff(): Argument #1 is not an array faces.inc:233                                                                                          [warning]
.usr.local.www.drupal7#_redacted_.de >> class_implements(): Class RulesPluginFeaturesIntegrationInterface does not exist and could not be loaded faces.inc:237                           [warning]
.usr.local.www.drupal7#_redacted_.de >> WD php: Error: Unsupported operand types in FacesExtendable->extend() (line 237 of                                                               [error]
/usr/local/www/drupal7/sites/all/modules/rules/includes/faces.inc).
.usr.local.www.drupal7#_redacted_.de >> Drush command terminated abnormally due to an unrecoverable error.                                                                               [error]
.usr.local.www.drupal7#_redacted_.de >> <h1>Additional uncaught exception thrown while handling exception.</h1><h2>Original</h2><p>Error: Unsupported operand types in FacesExtendable-&gt;extend() (line 237 of /usr/local/www/drupal7/sites/all/modules/rules/includes/faces.inc).</p><h2>Additional</h2><p>FacesExtendableException: There is no method process for this instance of the class RulesAction. in FacesExtendable-&gt;__call() (line 139 of /usr/local/www/drupal7/sites/all/modules/rules/includes/faces.inc).</p><hr />

I was facing the same problem and created a patch makes sure your site works so that you can clear cache and tell Drupal about the existence of the interface.

In updating a legacy D7 site, ran across this issue, as well. The patch in #15 by jigarius worked for me.

Also encountered this problem on an outdated site. The patch in #15 by jigarius helped for me. Thanks.

Patch in #15 works for me as well - I hope it gets committed to the module soon. Thanks @jigarius!

+1 #15 - thanks

Patch in #15 worked for me too.