Hey guys need your advice

hey guys anybody know how to fix this one problem?


js-bson: Failed to load c++ bson extension, using pure JS version
{ [Error: Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' }

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#
#   !!! MONGOOSE WARNING !!!
#
#   This is an UNSTABLE release of Mongoose.
#   Unstable releases are available for preview/testing only.
#   DO NOT run this in production.
#
##############################################################

Loading Model:user.js
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