MongoDB POST Request Error: How to Fix \'No write concern mode named \'majority\' found\'?

Error: 'No write concern mode named 'majority` found in replica set configuration'

When encountering the "No write concern mode named 'majority` found in replica set configuration" error while inserting data into MongoDB via a POST request, the issue lies within the connection string.

To resolve this error, your connection string should be modified to remove the "&w=majority" write concern setting. This setting instructs MongoDB to wait for a majority of replica set members to confirm the write operation before acknowledging it. However, your replica set configuration may not have this write concern mode enabled.

Therefore, remove the "&w=majority" parameter from the connection string, as shown in the following example:

"mongoURI" : "mongodb+srv://${ db user name }:${ db password }@cluster0.mde0j.mongodb.net/cluster0?retryWrites=true"

After making this change, you should be able to insert data without encountering the aforementioned error.

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