can fix the encoding problem:"environment can only contain strings"

[evrn1874]

environment can only contain strings
many people meet
error message:
{"status": "error", "message": "environment can only contain strings", "node_name": "XSOOY-PC"}
when deploying project
I found this problem lies in the method get_spider_list() in utils.py of scrapyd
we must make sure that the value of the env passed into the Popen is str
But in fact env['SCRAPY_PROJECT'] and env['SCRAPY_EGG_VERSION'] these two parameters from the outside into the Unicode type,
if in python3 is will fine, but in the python2 we must first convert unicode to str , similar to the
Env['SCRAPY_PROJECT'] = str (project)
Env['SCRAPY_EGG_VERSION'] = str (version)
then is ok
could fix this problem in later version? thanks~

[jpmckinney]

This sounds like a Python 2 issue. Python 2 is no longer supported.