I'm not sure which page this is and I'm not sure if it is caused by rendering the page on the command line but we found it by indexing frwikisource for Cirrus which uses the parser from the command line. Anyway, the error message is this:
Warning: Invalid argument supplied for foreach() in /usr/local/apache/common-local/php-1.23wmf2/extensions/ProofreadPage/ProofreadPage.body.php on line 407
Version: unspecified
Severity: normal