it doesn't work under (ubuntu18.04 captcha 0.3 pillow 6.0.0 python 3.6.7)

[Icemelon99]

I am a fresh coder, I am already find it from google, but... this is my question, how can i solve it? code:

    image = ImageCaptcha(fonts=['./ihome/utils/captcha/fonts/actionj.ttf', './ihome/utils/captcha/fonts/Georgia.ttf'])
    str1 = 'abcd123efghijk45lmn6opqrst789uvwxyz0'
    text = ''
    for i in range(0, 4):
        text += str1[random.randrange(0, len(str1))]
    image_data = image.generate(text)

ERROR: Traceback (most recent call last): File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/PIL/ImageFile.py", line 488, in _save fh = fp.fileno() AttributeError: '_idat' object has no attribute 'fileno'

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 2328, in call return self.wsgi_app(environ, start_response) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 2314, in wsgi_app response = self.handle_exception(e) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 1760, in handle_exception reraise(exc_type, exc_value, tb) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/_compat.py", line 36, in reraise raise value File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 2311, in wsgi_app response = self.full_dispatch_request() File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 1834, in full_dispatch_request rv = self.handle_user_exception(e) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 1737, in handle_user_exception reraise(exc_type, exc_value, tb) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/_compat.py", line 36, in reraise raise value File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 1832, in full_dispatch_request rv = self.dispatch_request() File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/flask/app.py", line 1818, in dispatch_request return self.view_functionsrule.endpoint File "/home/icmelon/virtual_environment/flask/flask/bin/ihome_project/ihome/api_1_0/verify_code.py", line 21, in get_image_codes image_data = image.generate(text) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/captcha/image.py", line 47, in generate im.save(out, format=format) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/PIL/Image.py", line 2007, in save save_handler(self, fp, filename) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/PIL/PngImagePlugin.py", line 896, in _save [("zip", (0, 0)+im.size, 0, rawmode)]) File "/home/icmelon/virtual_environment/flask/flask/lib/python3.6/site-packages/PIL/ImageFile.py", line 502, in _save l, s, d = e TypeError: 'ImagingEncoder' object is not iterable

But pillow 5.0.0 can work!