API page: https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Render!Element!Li...
Enter a descriptive title (above) relating to class Link, then describe the problem you have found:
Closed: cannot reproduce
11.0 🔥
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
The isn't anything actionable in the issue summary. The are several files names Link.php and the one linked to in the issue summary doesn't have a GetUri method, now nor did I see what in Drupal 8.0.0. Therefore, closing.