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React: Cannot read properties of undefined (reading '0') – Reactjs

i am getting the error Grade.jsx:52 Uncaught TypeError: Cannot read properties of undefined (reading '0') at Grade.jsx:52:1 at Array.map (<anonymous>) at Grade (Grade.jsx:39:1) at renderWithHooks (react-dom.development.js:16305:1) at mountIndeterminateComponent (react-dom.development.js:20074:1) at beginWork (react-dom.development.js:21587:1) at HTMLUnknownElement.callCallback (react-dom.development.js:4164:1) at Object.invokeGuardedCallbackDev (react-dom.development.js:4213:1) at invokeGuardedCallback…

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Mongodb – How to handle mongoose errors globaly

As for now, I'm using mongoose middleware to handle Mongoose specific errors (validation, cast, ....). I'm using the following code in all of my schemas: schema.post('save', handleValidationError); schema.post('findOneAndUpdate', handleValidationError); schema.post(['findOne', 'deleteOne'], handleCastError); Is there anyway to make this global in…

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