An issue about groups
I have an issue about groups. I take that issue just on Groups page. IDK how to fix it.
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'bp_group_new_topic_button' not found or invalid function name in /home/wuubicom/public_html/wp-includes/class-wp-hook.php on line 286
That’s my a group page: https://wuubi.com/gruplar/ydb-gurubu/
You can examine my issue on that page.
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