I have a problem with the search.
I have on my server two forums.
my MongoDB has both networks.
The search returns an error message in both.

Network 1 9/1 11:19 [8742] - error: [plugins] filter:search.query, Unable to execute query: error processing query: ns=1.searchpost limit=50 skip=0 Tree: TEXT : query=dres, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query 9/1 11:19 [8742] - error: /api/search/dres MongoError: Unable to execute query: error processing query: ns=1.searchpost limit=50 skip=0 Tree: TEXT : query=dres, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query at Function.MongoError.create (/NodeBB/node_modules/mongodb/node_modules/mong odb-core/lib/error.js:31:11) at queryCallback (/NodeBB/node_modules/mongodb/node_modules/mongodb-core/lib/cursor.js:266:34) at Callbacks.emit (/NodeBB/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:95:3) at null.messageHandler (/NodeBB/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:249:23) at Socket.<anonymous> (/NodeBB/node_modules/mongodb/node_modules/mongodb-core/lib/connection/connection.js:265:22) at Socket.emit (events.js:95:17) at Socket.<anonymous> (_stream_readable.js:748:14) at Socket.emit (events.js:92:17) at emitReadable_ (_stream_readable.js:410:10) at emitReadable (_stream_readable.js:406:5) 9/1 11:19 [8742] - error: [plugins] filter:search.query, Unable to execute query: error processing query: ns=1.searchtopic limit=50 skip=0 Tree: TEXT : query=dres, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query Network 2 9/1 11:25 [28360] - error: [plugins] filter:search.query, Unable to execute query: error processing query: ns=0.searchpost limit=20 skip=0 Tree: TEXT : query=hallo, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query 9/1 11:25 [28360] - error: /api/search/hallo MongoError: Unable to execute query: error processing query: ns=0.searchpost limit=20 skip=0 Tree: TEXT : query=hallo, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query at Function.MongoError.create (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/error.js:31:11) at queryCallback (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/cursor.js:266:34) at Callbacks.emit (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:95:3) at null.messageHandler (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:249:23) at Socket.<anonymous> (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/connection/connection.js:265:22) at Socket.emit (events.js:95:17) at Socket.<anonymous> (_stream_readable.js:748:14) at Socket.emit (events.js:92:17) at emitReadable_ (_stream_readable.js:410:10) at emitReadable (_stream_readable.js:406:5) 9/1 11:25 [28360] - error: [plugins] filter:search.query, Unable to execute query: error processing query: ns=0.searchtopic limit=20 skip=0 Tree: TEXT : query=hallo, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query 9/1 11:25 [28360] - error: [plugins] filter:search.query, Unable to execute query: error processing query: ns=0.searchtopic limit=20 skip=0 Tree: TEXT : query=Population Boom 89' - Gibt es eine Überbevölkerung ?, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query 9/1 11:25 [28360] - error: [plugins] filter:widget.render:suggestedtopics, Unable to execute query: error processing query: ns=0.searchtopic limit=20 skip=0 Tree: TEXT : query=Population Boom 89' - Gibt es eine Überbevölkerung ?, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query 9/1 11:25 [28360] - error: /api/widgets/render MongoError: Unable to execute query: error processing query: ns=0.searchtopic limit=20 skip=0 Tree: TEXT : query=Population Boom 89' - Gibt es eine Überbevölkerung ?, language=, tag=NULL Sort: {} Proj: { _id: 0, id: 1 } planner returned error: need exactly one text index for $text query at Function.MongoError.create (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/error.js:31:11) at queryCallback (/nodebb/node_modules/mongodb/node_modules/mongo db-core/lib/cursor.js:266:34) at Callbacks.emit (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:95:3) at null.messageHandler (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/topologies/server.js:249:23) at Socket.<anonymous> (/nodebb/node_modules/mongodb/node_modules/mongodb-core/lib/connection/connection.js:265:22) at Socket.emit (events.js:95:17) at Socket.<anonymous> (_stream_readable.js:748:14) at Socket.emit (events.js:92:17) at emitReadable_ (_stream_readable.js:410:10) at emitReadable (_stream_readable.js:406:5)