Hello: 

    I have built a horizon image in ussuri version, but it works abnormal due to package mismatch problem.

    According to Django===2.2.12 from latest upper-constraint.txt, it is not compatible with mysqlclient.

    Using old version Django===2.1.5 can fix the problem.

    Could you help me to check the mismatch problem. 

    Many thanks.

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