diff --git a/src/wp-includes/class-wp-user-query.php b/src/wp-includes/class-wp-user-query.php
index fd35182eab..3d2134452b 100644
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a
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b
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class WP_User_Query {
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| 482 | 482 | $caps_with_roles = array(); |
| 483 | 483 | |
| 484 | 484 | foreach ( $available_roles as $role => $role_data ) { |
| 485 | | $role_caps = array_keys( array_filter( $role_data['capabilities'] ) ); |
| | 485 | $role_caps = (isset($role_data['capabilities'])) ? array_keys( array_filter( $role_data['capabilities'] ) ) : array(); |
| 486 | 486 | |
| 487 | 487 | foreach ( $capabilities as $cap ) { |
| 488 | 488 | if ( in_array( $cap, $role_caps, true ) ) { |