📅  最后修改于: 2022-03-11 14:48:31.489000             🧑  作者: Mango
This problem might arise due to version mismatch. To solve your problem you need to do following changes in your package.json file.
Go to package.json and modify "rxjs": "^6.0.0" to "rxjs": "6.0.0"
then npm update
then ng serve