Debug why WKWebView did terminate

[steschwa]

Hi 👋

We are working on a project that uses Capacitor, Ionic, React, Google Maps and Firebase besides others. Few days ago we noticed a bug that causes the whole WebView to reload (see output below). After the first crash it keeps crashing every 5 to 10 seconds which basically makes the app unusable.

Unfortunately there is not much information what caused the crash. Is there a way to get a more descriptive error message? Naive approach: something like an onError handler

2023-03-07 13:42:18.541455+0100 App[378:11099] [Process] 0x114001460 - [PID=382] WebProcessProxy::didClose: (web process 0 crash)
2023-03-07 13:42:18.541800+0100 App[378:11099] [Process] 0x114001460 - [PID=382] WebProcessProxy::processDidTerminateOrFailedToLaunch: reason=4
2023-03-07 13:42:18.543945+0100 App[378:11099] [ProcessSuspension] 0x10e018240 - ProcessAssertion: Failed to acquire RBS Background assertion 'ConnectionTerminationWatchdog' for process because PID 0 is invalid
2023-03-07 13:42:18.544764+0100 App[378:12150] [ProcessSuspension] 0x10e018240 - ProcessAssertion::acquireSync Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=0, error: (null)
2023-03-07 13:42:18.549591+0100 App[378:11099] [Process] 0x110834018 - [pageProxyID=8, webPageID=9, PID=382] WebPageProxy::processDidTerminate: (pid 382), reason 4
2023-03-07 13:42:18.577780+0100 App[378:11099] [Loading] 0x110834018 - [pageProxyID=8, webPageID=9, PID=382] WebPageProxy::dispatchProcessDidTerminate: reason=Crash
2023-03-07 13:42:18.588342+0100 App[378:12150] [assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
2023-03-07 13:42:18.588486+0100 App[378:12150] [ProcessSuspension] 0x10e018300 - ProcessAssertion::acquireSync Failed to acquire RBS assertion 'WebProcess Background Assertion' for process with PID=382, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
2023-03-07 13:42:48.547541+0100 App[378:11099] Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service

Related discussions

• How to handle WKWebView Errors after ios memory pressure
• iOS: webViewWebContentProcessDidTerminate and the value of UIApplication.shared.applicationState

[MelB-24]

@steschwa did you manage to find any solutions or causes. We have nearly the same stack minus Google Maps and not having any luck tracking anything down

[steschwa]

I'm sorry, but no, we haven't found a solution for that. One thing that seemingly improved the situation was the change that we now load data at the moment we need it instead of loading data in bulk