Fatal Exception: java.lang.IncompatibleClassChangeError

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Joshua Liu

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Oct 30, 2018, 10:40:19 PM10/30/18
to Google Mobile Ads SDK Developers
Fatal Exception: java.lang.IncompatibleClassChangeError: Class 'com.google.android.gms.ads.internal.client.m' does not implement interface 'com.google.android.gms.ads.internal.util.f' in call to 'void com.google.android.gms.ads.internal.util.f.a(java.lang.String, java.lang.String, boolean)' (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar)
       at com.google.android.gms.ads.nonagon.ad.nativead.bc.run(Unknown Source:10)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
       at java.lang.Thread.run(Thread.java:818)

Only crash in Android 5.1 - report by firebase

and dependencies

compile 'com.google.android.gms:play-services-plus:16.0.0'
compile 'com.google.android.gms:play-services-gcm:16.0.0'
compile 'com.google.android.gms:play-services-auth:16.0.1'
// For admob
compile 'com.google.android.gms:play-services-ads:17.0.0'
// For facebook
compile 'com.facebook.android:audience-network-sdk:5.0.0'
compile 'com.google.ads.mediation:facebook:5.0.0.1'

This issue has 1,173 crashes affecting 535 users.

mobileadssdk-a...@google.com

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Oct 31, 2018, 2:47:49 AM10/31/18
to Joshua Liu, Google Mobile Ads SDK Developers
Hi Joshua,

Thank you for bringing this to our attention and for providing helpful details.

The team is looking into this. Rest assured that we will keep you posted for any updates.

In the meantime, were you able to reproduce these crashes locally on your end? If so, would you be able to provide replication steps that could reliably produce the crash?

Regards,
Ivan Bautista
Mobile Ads SDK Team




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Carl Hasselskog

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Nov 6, 2018, 11:09:51 AM11/6/18
to Google Mobile Ads SDK Developers
Any update on this? It's our most common cause of crashes and is impairing our Android Vitals score. I've attached a log from Fabric with some more details. 

Regards
Carl
com.degoo.android_issue_29591_crash_5BE1B2DA038C00010BB716C985365FC8_DNE_1_v2.txt

mobileadssdk-a...@google.com

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Nov 7, 2018, 2:41:43 AM11/7/18
to Carl Hasselskog, Google Mobile Ads SDK Developers
Hi Carl,

Thank you for providing a copy of the Crashlytics logs captured on your end. I will relay this to the team to help with the investigation.

Please note that the team is still looking into this but rest assured that we will keep you posted for any updates.

Regards,
Ivan Bautista
Mobile Ads SDK Team



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Minas Keshishyan

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Nov 24, 2018, 8:40:02 AM11/24/18
to Google Mobile Ads SDK Developers
Hi Ivan,
Any updates?

We pushed update to our app yesterday and we are getting a lot of crashes with the same log:

Fatal Exception: java.lang.IncompatibleClassChangeError: Class 'com.google.android.gms.ads.internal.client.m' does not implement interface 'com.google.android.gms.ads.internal.util.f' in call to 'void com.google.android.gms.ads.internal.util.f.a(java.lang.String, java.lang.String, boolean)' (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar)
       at com.google.android.gms.ads.nonagon.ad.nativead.bb.run(Unknown Source:10)

       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
       at java.lang.Thread.run(Thread.java:818)

It's mostly crashing on Android 5.1, but we got crashes from Android 9 as well.

Regards,
Minas 

Carl Hasselskog

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Nov 24, 2018, 8:48:47 AM11/24/18
to Google Mobile Ads SDK Developers
Same here. It's the most common crash for our app and it's making our Android Vitals look very bad. If Google is punishing apps for crashes it would be prudent if it fixes the crashes in its own libraries.

mobileadssdk-a...@google.com

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Nov 26, 2018, 2:55:34 PM11/26/18
to Carl Hasselskog, Google Mobile Ads SDK Developers
Hello,

I'm Ivan's colleague assisting you as he is out of office. 

@Minas: Could you share the Crashlytics logs or links, so we can share the complete stack trace with the team which might help with the investigation? Could you also share the frequency of the crash on Android 9?

@Carl: Our team is currently looking into the issue. I will keep you posted on any further updates regarding this. 

Thanks,
Bharani Cherukuri
Mobile Ads SDK Team

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Minas Keshishyan

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Nov 26, 2018, 3:15:51 PM11/26/18
to Google Mobile Ads SDK Developers
Hi Bharani,
It seems like it is a different crash on Android 9 and it's already reported here:

mobileadssdk-a...@google.com

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Nov 27, 2018, 10:23:06 AM11/27/18
to Minas Keshishyan, Google Mobile Ads SDK Developers
Hello Minas, 

Let's the continue the discussion on that thread for better tracking as they seem to be two different issues. 

Thanks,
Bharani Cherukuri
Mobile Ads SDK Team

A.P.

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Dec 1, 2018, 3:33:43 AM12/1/18
to Google Mobile Ads SDK Developers
Same issue for our apps. It is the number one crash (by far) and it only happens on Android 5.1 device. Please do something about this. Is there an official/main thread regarding this issue?

mobileadssdk-a...@google.com

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Dec 3, 2018, 1:17:21 PM12/3/18
to A.P., Google Mobile Ads SDK Developers
Hello, 

This is a known issue and our team is currently looking into this. I will keep you posted on any further updates regarding this. 

Thanks,
Bharani Cherukuri
Mobile Ads SDK Team

Serhat

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Mar 22, 2019, 3:11:03 AM3/22/19
to Google Mobile Ads SDK Developers
Any update? 

mobileadssdk...@google.com

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Mar 22, 2019, 11:13:34 AM3/22/19
to Serhat, Google Mobile Ads SDK Developers
Hello Serhet, 

Our Engineering team is having trouble replicating the crash on our end. Are you still having an issue with this? If so, could you please share the Crash logs along with the detailed steps to replicate this? This information will help us troubleshoot this further.

bar mawi

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Mar 22, 2019, 11:46:22 AM3/22/19
to mobileadssdk...@google.com, Serhat, Google Mobile Ads SDK Developers
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ümmet ünlü

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Mar 22, 2019, 2:32:20 PM3/22/19
to bar mawi, mobileadssdk...@google.com, Serhat, Google Mobile Ads SDK Developers
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