Coding problem: $PAGE->context was not set when using the comments block on the dashboard

Notice: Trying to get property of non-object in /Applications/MAMP/htdocs/moodle/comment/comment_post.php on line 51
Coding problem: $PAGE->context was not set. You may have forgotten to call require_login() or $PAGE->set_context(). The page may not display correctly as a result

line 458 of /lib/pagelib.php: call to debugging()
line 773 of /lib/pagelib.php: call to moodle_page->magic_get_context()
line 1242 of /lib/weblib.php: call to moodle_page->__get()
line 709 of /comment/lib.php: call to format_text()
line 59 of /comment/comment_post.php: call to comment->add()

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