java.util.UnknownFormatConversionException - Conversion = '$'

[seanlip]

Describe the bug

There is a new crash recorded in 0.14-beta-17f2ef3044. It has 11 crash events affecting 11 users. Here is the log:

 Caused by java.util.UnknownFormatConversionException: Conversion = '$'
       at java.util.Formatter$FormatSpecifier.conversion(Formatter.java:2781)
       at java.util.Formatter$FormatSpecifier.<init>(Formatter.java:2811)
       at java.util.Formatter$FormatSpecifierParser.<init>(Formatter.java:2624)
       at java.util.Formatter.parse(Formatter.java:2557)
       at java.util.Formatter.format(Formatter.java:2504)
       at java.util.Formatter.format(Formatter.java:2458)
       at java.lang.String.format(String.java:2814)
       at iW.E.b(SourceFile:79)
       at iW.E.a(SourceFile:73)
       at hO.j.a(SourceFile:38)
       at org.oppia.android.app.help.faq.p.a(SourceFile:35)
       at org.oppia.android.app.help.faq.p.a(SourceFile:2044)
       at org.oppia.android.app.help.faq.q.R_(SourceFile:1019)
       at eU.A.a(SourceFile:74)
       at org.oppia.android.app.help.faq.p.a(SourceFile:18)
       at hm.bL.g(SourceFile:116)
       at androidx.databinding.ViewDataBinding.h(SourceFile:3472)
       at androidx.databinding.ViewDataBinding$OnStartListener.onStart(SourceFile:1685)
       at java.lang.reflect.Method.invoke(Method.java)
       at androidx.lifecycle.c.a(SourceFile:216)
       at androidx.lifecycle.b.a(SourceFile:194)
       at androidx.lifecycle.b.a(SourceFile:185)
       at androidx.lifecycle.ReflectiveGenericLifecycleObserver.a(SourceFile:37)
       at androidx.lifecycle.x.a(SourceFile:354)
       at androidx.lifecycle.w.b(SourceFile:265)
       at androidx.lifecycle.w.c(SourceFile:307)
       at androidx.lifecycle.w.c(SourceFile:148)
       at androidx.lifecycle.w.a(SourceFile:134)
       at androidx.fragment.app.y.ak(SourceFile:3026)
       at androidx.fragment.app.aE.r(SourceFile:589)
       at androidx.fragment.app.aE.n(SourceFile:300)
       at androidx.fragment.app.aH.h(SourceFile:112)
       at androidx.fragment.app.ae.a(SourceFile:1647)
       at androidx.fragment.app.ae.e(SourceFile:3128)
       at androidx.fragment.app.ae.w(SourceFile:3079)
       at androidx.fragment.app.X.j(SourceFile:262)
       at androidx.fragment.app.FragmentActivity.onStart(SourceFile:510)
       at androidx.appcompat.app.AppCompatActivity.onStart(SourceFile:246)
       at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1339)
       at android.app.Activity.performStart(Activity.java:7403)
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3411)
       at android.app.ActivityThread.-wrap12()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1994)
       at android.os.Handler.dispatchMessage(Handler.java:108)
       at android.os.Looper.loop(Looper.java:166)
       at android.app.ActivityThread.main(ActivityThread.java:7529)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:245)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:921)
       

Steps To Reproduce

Not sure, this is filed based on a crashlytics report.

Expected Behavior

The error should not happen.

Screenshots/Videos

No response

What device/emulator are you using?

Huawei Y6 Prime 2018

Which Android version is your device/emulator running?

Android 8.0.0

Which version of the Oppia Android app are you using?

0.14-beta-17f2ef3044

Additional Context

No response

[adhiamboperes]

The errorjava.util.UnknownFormatConversionException: Conversion = '$'occurs when a String.format() method encounters an invalid format specifier—particularly, an unexpected $ symbol.

The %$ is not a valid format specifier, leading to the exception. I did a global search(ctrl + shift + F) for %$, and found the occurrance in string faq_answer_math_lessons in arabic contains this error. It should be corrected to %1$s

[aadityaverma2011]

please assign this to me

[TanishMoral11]

Assigned this issue to you @aadityaverma2011 .