IllegalStateException from test app

[mrifni]

getting this error from live app for few users often. Not sure whats happening.
I run the same test app so guessing issue persists in test app as well.

Code is based on latest develop branch 2 weeks ago. Error line is 65.

Caused by java.lang.IllegalStateException
Required value was null.
com.testapp.epub_plugin.reader.EpubReaderFragment.onCreate (EpubReaderFragment.java:201)
androidx.fragment.app.Fragment.performCreate (Fragment.java:32)

androidx.fragment.app.FragmentActivity.onCreate (FragmentActivity.java:12)
com.testapp.epub_plugin.reader.ReaderActivity.onCreate (ReaderActivity.java:65)
android.app.Activity.performCreate (Activity.java:7893)

com.android.internal.os.ZygoteInit.main (ZygoteInit.java:995)

Device
Brand:Xiaomi
Model:Redmi Note 8 Pro
Orientation: Portrait
RAM free: 1.92 GB
Disk free: 9.67 GB

Operating System
Version:Android 10
Orientation: Portrait
Rooted:No

[mickael-menu]

It's hard to say as the line numbers don't match the Kotlin versions but the JVM ones, but I guess it crashes here:

kotlin-toolkit/test-app/src/main/java/org/readium/r2/testapp/reader/EpubReaderFragment.kt

Line 77 in 540c80f

val baseUrl = checkNotNull(readerData.baseUrl).toString()

Check that your readerData is correctly filled and has the baseUrl.

[mrifni]

error isnt coming to all the users but for like 10% of the users. There is something else going on here.

[mickael-menu]

Closing as I don't think there's anything to fix in the toolkit.

[mabacy]

I have same issue as you described @mrifni, can you please support me if you solved it

[mickael-menu]

More info about this issue: #425 (comment)