The content [id= uuid=_a-0000e64f-0157-8000-9bc3-011c48011c48_200586] w not imported because a required precedent is missing: content [uuid=_a 0000e64f-0157-8000-9bc3-011c48011c48_193162 location=Expression Rule Definition] cannot be found. (APNX-1-4070-001) (APNX-1-4071-006)
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It's a self-explanatory error. You're attempting to import a patch (a set of objects) and Appian won't import one of them (the first one mentioned) because it depends on another object (the second one mentioned).
You can search for the UUIDs on the Appian source system.