vue.js - TypeError: Cannot read property 'toString' of undefined

[Tovli]

EDIT:
This was due to reject() for the onreject action where I wanted to swallow the exception. It was fixed by changing this to () => {}.

I still consider this as an abnormal behavior of sentry lib as it should not fail on null value on exception (IMO)

• Review the documentation: https://docs.sentry.io/
• Search for existing issues: https://github.com/getsentry/sentry-javascript/issues
• Use the latest release: https://github.com/getsentry/sentry-javascript/releases
• Provide a link to the affected event from your Sentry account
  https://sentry.io/share/issue/5317881fb9fb443c91df1fefa1b9484a/

Package + Version

• @sentry/browser
• @sentry/node
• raven-js
• raven-node (raven for node)
• other:

Version:

@sentry/browser 5.30.0 (saw it also on 5.28.0)
vue 2.6.12

0.0.0

Description

On initial load the app breaks and I see the following error in the console:

instrument.js:109 [Vue warn]: Error in config.errorHandler: "TypeError: Cannot read property 'toString' of undefined"

Digging a bit, I get to the following line

_this._options.Vue.util.warn("Error in " + info + ": "" + error.toString() + """, vm);

This belong to this function:

/** Inject Sentry's handler into owns Vue's error handler */
Vue.prototype._attachErrorHandler = function (getCurrentHub) {

and also to this line:

warn(("Error in " + info + ": "" + (err.toString()) + """), vm);

under the function

function logError (err, vm, info) {

and also in this part:

  // this fails for some browsers. :(
                if (originalConsoleLevel) {
                    Function.prototype.apply.call(originalConsoleLevel, global.console, args);
                }

under this function

function instrumentConsole() {