React Native bug fix

1. Unable to install React Native iOS app on my device in debug mode 2. Unable to run multiple simulators like npx react-native run-ios --simulator="iPhone 11 Pro Max” npx react-native run-ios --simulator="iPhone 6” If you are an EXPERT in BOTH iOS and React Native, pls respond Here is the error message for #1 Unable to install “xxxx” Domain: [login to view URL] Code: -402620395 -- A valid provisioning profile for this executable was not found. Domain: [login to view URL] Code: -402620395 User Info: { DVTRadarComponentKey = 487925; MobileDeviceErrorCode = "(0xE8008015)"; "[login to view URL]" = ( 0 DTDeviceKitBase 0x000000011fcc881a DTDKCreateNSErrorFromAMDErrorCode + 233 1 DTDeviceKitBase 0x000000011fd09f70 __90-[DTDKMobileDeviceToken installApplicationBundleAtPath:withOptions:andError:withCallback:]_block_invoke + 155 2 DVTFoundation 0x000000010656c155 DVTInvokeWithStrongOwnership + 73 3 DTDeviceKitBase 0x000000011fd09ca8 -[DTDKMobileDeviceToken installApplicationBundleAtPath:withOptions:andError:withCallback:] + 1654 4 IDEiOSSupportCore 0x000000011fb80e91 __118-[DVTiOSDevice(DVTiPhoneApplicationInstallation) processAppInstallSet:appUninstallSet:installOptions:completionBlock:]_block_invoke.352 + 4165 5 DVTFoundation 0x000000010669f7f4 __DVT_CALLING_CLIENT_BLOCK__ + 7 6 DVTFoundation 0x00000001066a1436 __DVTDispatchAsync_block_invoke + 1194 7 [login to view URL] 0x00007fff6b9636c4 _dispatch_call_block_and_release + 12 8 [login to view URL] 0x00007fff6b964658 _dispatch_client_callout + 8 9 [login to view URL] 0x00007fff6b969c44 _dispatch_lane_serial_drain + 597 10 [login to view URL] 0x00007fff6b96a5d6 _dispatch_lane_invoke + 363 11 [login to view URL] 0x00007fff6b973c09 _dispatch_workloop_worker_thread + 596 12 [login to view URL] 0x00007fff6bbbea3d _pthread_wqthread + 290 13 [login to view URL] 0x00007fff6bbbdb77 start_wqthread + 15 ); } -- System Information macOS Version 10.15.