Nowadays Tumblr doesn't allow any theme modification without updating all existing theme assets paths from http to https.
(如今,Tumblr在不将所有现有主题资产路径从http更新为https的情况下,不允许进行任何主题修改。)
Simply substitute all occurrences of http in your theme code with https and then you will be allowed to save your changes.
(只需将主题代码中所有出现的http替换为https ,然后就可以保存更改。)
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