Did you search for similar issues before submitting this one?
Yes
Describe the issue you encountered:
Attempting to navigate back one page outputs the following:
An uncaught exception occurred in the main process Uncaught Exception:
TypeError: api.getWebContents is not a function
at Object.goBack (C:\browser-laptop-bootstrap\src\browser-laptop\app\browser\tabs.js:630:21)
at tabsReducer (C:\browser-laptop-bootstrap\src\browser-laptop\app\browser\reducers\tabsReducer.js:86:20)
at reducers.reduce (C:\browser-laptop-bootstrap\src\browser-laptop\js\stores\appStore.js:357:24)
at Array.reduce (native)
at applyReducers (C:\browser-laptop-bootstrap\src\browser-laptop\js\stores\appStore.js:355:51)
at handleAppAction (C:\browser-laptop-bootstrap\src\browser-laptop\js\stores\appStore.js:392:14)
at callbacks.forEach (C:\browser-laptop-bootstrap\src\browser-laptop\js\dispatcher\appDispatcher.js:84:7)
at Array.forEach (native)
at AppDispatcher.dispatchToOwnRegisteredCallbacks (C:\browser-laptop-bootstrap\src\browser-laptop\js\dispatcher\appDispatcher.js:83:20)
at AppDispatcher.dispatchInternal (C:\browser-laptop-bootstrap\src\browser-laptop\js\dispatcher\appDispatcher.js:109:10)
Platform (Win7, 8, 10? macOS? Linux distro?):
Desktop
Brave Version (revision SHA):
0.15.0
Steps to reproduce:
Actual result:
Exception is thrown
Expected result:
Navigation occurs
Will the steps above reproduce in a fresh profile? If not what other info can be added?
Yes
Is this an issue in the currently released version?
No
Can this issue be consistently reproduced?
Yes
Screenshot if needed:

Probably the same underlying problem as #8313. I'm also seeing this problem but only on master.
@Liunkae this should fix this error https://github.com/brave/browser-laptop/commit/c14021dceea244527c557ee7392440953fc1cab7 it's already in the master
Most helpful comment
@Liunkae this should fix this error https://github.com/brave/browser-laptop/commit/c14021dceea244527c557ee7392440953fc1cab7 it's already in the master