See: https://webwork.maa.org/moodle/mod/forum/discuss.php?d=4916 It seems possible that the use of `encode_utf8($msg)` made in https://github.com/openwebwork/webwork2/pull/973 will need to be replaced by the use of `encode("UTF-8", $msg)`. We need confirmation that this helps on systems experiencing such problems before making such a change.
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