Undefined call to wp_get_current_user

I did never see and do not have this error up to PHP 7.2.7. Is your wp version up to rev?
Is the error reproduceable or is it intermittent or incidentially: how many messages are there?

wp_get_current_user() is an existing wp function and should be available at any moment for a plugin.

Weird, well the version of wordpress is:
$ wp core version
4.9.7

and the plugin list is:
$ wp plugin list
+——————————–+——–+———–+————-+
| name | status | update | version |
+——————————–+——–+———–+————-+
| ad-inserter | active | none | 2.3.14 |
| akismet | active | none | 4.0.8 |
| antispam-bee | active | none | 2.8.1 |
| bunyad-siteorigin-panels | active | none | 1.3.7.5-mod |
| bunyad-shortcodes | active | none | 1.0.6 |
| bunyad-widgets | active | none | 1.0.5 |
| cache-control-by-cacholong | active | none | 4.0.1 |
| contact-form-7 | active | none | 5.0.3 |
| cookie-law-info | active | available | 1.6.0 |
| google-analytics-for-wordpress | active | none | 7.0.9 |
| nextgen-gallery | active | none | 3.0.1 |
| really-simple-captcha | active | none | 2.0.1 |
| wp-rss-multi-importer | active | none | 3.15 |
| velvet-blues-update-urls | active | none | 3.2.8 |
| wp-pagenavi | active | none | 2.92 |
| wp-photo-album-plus | active | none | 6.9.06.008 |
| wordpress-seo | active | none | 7.8 |
+——————————–+——–+———–+————-+

As far as I can see it is up 2 date.

The error is reproducable.

Regards, Matthijs

What anout this error:

PHP message: PHP Fatal error: Redefinition of parameter $thisLink in WWWROOT/vhosts/www/htdocs/wp-content/plugins/wp-rss-multi-importer/inc/excerpt_functions.php on line 570

Try to de-activate wp-rss-multi-importer. and see if the other error is caused by this error

Hm, I’ve missed the other ‘Fatal error’. After disabling the wp-rss-multi-importer everything worked fine.