Data race condition

The value of the shared data will be determined by the interleaving of thread execution. Thread shared data is accessed without holding an appropriate lock, possibly causing a race condition
/src/MongoDB.Driver.Core/Core/Clusters/MultiServerCluster.cs:254: GUARDED_BY_VIOLATION 127193 Accessing "this._servers" without holding lock "MultiServerCluster._serversLock". Elsewhere, "MultiServerCluster._servers" is written to with "MultiServerCluster._serversLock" held 2 out of 2 times.