N1QL + SEARCH clause with named parameter results in runtime error

Thanks for reporting this.

I’ve created a ticket - https://issues.couchbase.com/browse/MB-52476
I was able to reproduce and verify the fix, we’ll include this fix in our next release.

This was the commit that introduced this regression - https://review.couchbase.org/c/n1fty/+/169777
So you should look into picking up a build older than 7.1.0 - perhaps 7.0.3 if possible until 7.1.1 becomes available.