mac OS X Yosemite - Zotero no longer works today

Lilely because of an automated update, Zotero does not work anymore today (was fine yesterday).
My current library requires requests version 6.0.4, but the only available online version is 6.0.11.
I'm going to get an update of the OS version, but not in the coming weeks. Is it possible to solve this issue otherwise?
Thanks
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