Not sure if this is a bug or a feature from the expansion or the latest update, but civilizations that I am in alliance with have a tendency to stop trade, and reduce all the fun agreements we have before they start blocking my other trade routes and whatnot. I don't see any grievances, so I'm not sure what their deal is, but it's happened to multiple alliances in the same game until it gets bad enough that war is declared. Once the war is over, they seemingly love me again and we're back to an alliance in no time.
Your diagnostics logs. These are time stamped, and any time you close and relaunch the game, new ones are started. Please grab all diagnostics logs related to the session you were playing where the issue occurred. These are by default located:
satsui
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satsui
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15 900g2g ptsReport comment
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Ansive
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12 900g2g ptsReport comment
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DEVClankerBanker
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2 700g2g ptsReport comment
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