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I have the same error.I finally find out that I had many sympy in /usr ,the program may link to wrong version of sympy.
so my solution is deleting all sympy direcotry in /usr and install python-sympy again (you should choose the version you need).
Hope for helping you!
| | 2 | No.2 Revision |
I have met the same error.I error！
I finally find out that I had too many sympy packages in /usr ,the program may link to wrong version of sympy.sympy I guess.
you can run sudo find /usr -name "sympy" in you bash to find out whether if you have redundant packages.
If so my solution is deleting , you can delete all sympy direcotry packages in /usr
and install python-sympy again (you should choose the version you need).
Hope for helping you!
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