ns field has bson.D value that is not string or valid MongoDb

Thanks for this great work!! I'm getting this error, has anyone seen it?

` name: 'MongoError',
message: 'ns field has bson.D value that is not string or valid MongoDb RegEx: Error parsing value [{$in [db.collection db.collection2 db.collection2]}] to RegEx: Must specify $regex field',
ok: 0,
errmsg: 'ns field has bson.D value that is not string or valid MongoDb RegEx: Error parsing value [{$in [db.collection db.collection2 db.collection2]}] to RegEx: Must specify $regex field',
code: 8000,
codeName: 'AtlasError' }
`

Start by reproducing the reported MongoError in the MongoDB-to-MySQL replication flow and inspect how the ns value containing the $in expression is built. Trace the affected entry point, determine whether the value is malformed or unsupported, and define done as a confirmed fix or a documented incompatibility with a regression check.

Written by the indexing model from the issue text.