PHP Warning due to passing null as haystack value for in_array() #4145
Description
Bug Description
Getting the following PHP Error: Warning: in_array() expects parameter 2 to be array, null given in .../plugins/amp/includes/class-amp-theme-support.php on line 1533 this can be seen here: https://www.dropbox.com/s/n25ufth7yzt5n86/amp-error.jpg?dl=0
Expected Behaviour
There should be no PHP error
Steps to reproduce
Plugin is activated and I have standard settings activated as shown here: https://www.dropbox.com/s/8cetg3lu39vluc5/amp-settings.jpg?dl=0
Screenshots
As shown above
Additional context
- WordPress version: 5.3.2
- Plugin version: 1.4.2
- PHP version: 7.1.33
- Server: Apache
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