89: Multiple consecutive hints
The left curly bracket {
is used together with the right curly bracket }
to provide a hint. While it may be combined with a link, it is combined with a second hint in your case, which is not allowed.
Solution
Consider merging multiple hints into a single hint. If you did not mean to annotate content with a hint but want to use curly brackets literally, you can prepend them with a backslash: \{
and \}