Package "angular-agora-rtc" has an incompatible peer dependency to "@angular/common" (requires "^6.0.0-rc.0 || ^6.0.0" (extended), would install "8.0.2").
Package "angular-agora-rtc" has an incompatible peer dependency to "@angular/core" (requires "^6.0.0-rc.0 || ^6.0.0" (extended), would install "8.0.2").
Package "angular-agora-rtc" has an incompatible peer dependency to "@angular/common" (requires "^6.0.0-rc.0 || ^6.0.0" (extended), would install "8.0.2").
Package "angular-agora-rtc" has an incompatible peer dependency to "@angular/core" (requires "^6.0.0-rc.0 || ^6.0.0" (extended), would install "8.0.2").