TypeError

Hello I've been running my mongo and node-red code and after a while this happened:

• TypeError: Cannot read property 'done' of null

  at /home/pi/.node-red/node_modules/mongodb/lib/mongodb/auth/mongodb_scram.js:165:17

  at /home/pi/.node-red/node_modules/mongodb/lib/mongodb/db.js:1169:16

  at /home/pi/.node-red/node_modules/mongodb/lib/mongodb/db.js:1878:9

  at Server.Base._callHandler (/home/pi/.node-red/node_modules/mongodb/lib/mongodb/connection/base.js:453:41)

  at /home/pi/.node-red/node_modules/mongodb/lib/mongodb/connection/server.js:487:18

  at MongoReply.parseBody (/home/pi/.node-red/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)

  at . (/home/pi/.node-red/node_modules/mongodb/lib/mongodb/connection/server.js:445:20)

  at emitOne (events.js:96:13)

  at emit (events.js:188:7)

  at . (/home/pi/.node-red/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:201:13)

how could i fix this?

thanks, will

Start with the stack-trace location in mongodb/lib/mongodb/auth/mongodb_scram.js at line 165, then inspect the surrounding calls through db.js and the connection files. Reproduce the failure with the reported MongoDB and Node-RED setup after prolonged use; done means the null callback condition is explained and a verified fix or dependency resolution is documented.