我使用此脚本在edx中转换moodle课程 - ＆gt; https://github.com/mitocw/moodle2edx 但是当我运行它时，我得到了这个错误：
Converting moodle backup-moodle2-course2.mbz to edX /home/moodle/edx/
gzip: stdin has more than one entry--rest ignored
tar: Child returned status 2
tar: Error is not recoverable: exiting now
Traceback (most recent call last):
File "/usr/local/bin/moodle2edx", line 9, in <module>
load_entry_point('moodle2edx==0.1.0', 'console_scripts', 'moodle2edx')()
File "/home/moodle/src/moodle2edx/moodle2edx/main.py", line 551, in CommandLine
clean_up_html=opts.clean_up_html,
File "/home/moodle/src/moodle2edx/moodle2edx/main.py", line 66, in __init__
qdict = self.load_questions(mdir,qfn)
File "/home/moodle/src/moodle2edx/moodle2edx/main.py", line 449, in load_questions
moodq = etree.parse('%s/%s' % (dir,qfn))
File "src/lxml/lxml.etree.pyx", line 3427, in lxml.etree.parse (src/lxml/lxml.etree.c:85131)
File "src/lxml/parser.pxi", line 1782, in lxml.etree._parseDocument (src/lxml/lxml.etree.c:124005)
File "src/lxml/parser.pxi", line 1808, in lxml.etree._parseDocumentFromURL (src/lxml/lxml.etree.c:124374)
File "src/lxml/parser.pxi", line 1712, in lxml.etree._parseDocFromFile (src/lxml/lxml.etree.c:123169)
File "src/lxml/parser.pxi", line 1115, in lxml.etree._BaseParser._parseDocFromFile (src/lxml/lxml.etree.c:117533)
File "src/lxml/parser.pxi", line 573, in lxml.etree._ParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:110510)
File "src/lxml/parser.pxi", line 683, in lxml.etree._handleParseResult (src/lxml/lxml.etree.c:112276)
File "src/lxml/parser.pxi", line 611, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:111078)
IOError: Error reading file '/tmp/moodle2edxs_RPEf/questions.xml': failed to load external entity "/tmp/moodle2edxs_RPEf/questions.xml"