When viewing a stack that has more than 100 diffs in total associated with all the revisions in the stack, Lando can not load the page and instead returns a server error. This is because Phabricator only returns the first 100 diffs, potentially omitting the latest diffs from the results. For example, if a stack has 11 revisions, and each revision has 10 diffs in its history, this issue will arise. This appears to be a regression of https://github.com/mozilla-conduit/lando-api/pull/438 (no bug).
Bug 1953269 Comment 1 Edit History
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When viewing a stack that has more than 100 diffs in total associated with all the revisions in the stack, Lando can not load the page and instead returns a server error. This is because Phabricator only returns the first 100 diffs, potentially omitting the latest diffs from the results. For example, if a stack has 11 revisions, and each revision has 10 diffs in its history, this issue will arise. This appears to be a regression of https://github.com/mozilla-conduit/lando-api/pull/438 (no bug). A workaround is to split the stack in such a way that no one stack has more than 100 diffs, and land each stack separately.