ReflectionHelper errors after update Unity from 2018.2.21 to Unity 2019.2.9

Hello.

After updating Unity to version 2019.2 we have begun to receive the following errors through Play Console.
The errors we have not been able to reproduce them on our devices, apparently they occur randomly.

We have tried both the 2019.2.5 version and the 2019.2.9 version, and both give the same problem.

Before upgrading to Unity 2019.2.5 from 2018.2.21, these types of errors did not appear.

Code (CSharp):

1. com.unity3d.player.ReflectionHelper.nativeProxyInvoke
2. com.unity3d.player.ReflectionHelper.a
3. com.unity3d.player.ReflectionHelper$1.invoke (Unknown source:31)
4. java.lang.reflect.Proxy.invoke (Proxy.java:913)
5. $Proxy10.onRewardedAdLoaded
6. com.google.unity.ads.UnityRewardedAd$2$1$1.run (UnityRewardedAd.java:70)
7. java.lang.Thread.run (Thread.java:764)

Code (CSharp):

1. Caused by java.lang.Error: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0000002a
2. Build fingerprint: 'motorola/cedric_amx/cedric:8.1.0/OPPS28.85-13-6/04442:user/release-keys'
3. Revision: 'p500'
4. pid: 32690, tid: 1139, name: Thread-144  >>> com.noendprojects.kuinikfullfree <<<
5.     r0 00000000  r1 936c43a0  r2 595d0658  r3 595d0748
6.     r4 595d0748  r5 00000000  r6 00000000  r7 595d0658
7.     r8 00000003  r9 6ad2a800  sl 00000000  fp 595d080c
8.     ip 94b57ac0  sp 595d0608  lr 962d7d7b  pc 936f4d70  cpsr 69547780
9.  
10.        at libil2cpp.0034ed70()
11.        at libunity.00252d79()
12.        at libunity.002466d9()
13.        at libunity.003a961b()
14.        at base.oatexec(oatexec)

Can help us?

Thanks!

 

same error after updating to 2021.3.16f1

 

Is it a fix on Unity or UnityAds ?
If it's a Unity fix, will this fix this similar bug too ? : https://forum.unity.com/threads/202...flectionhelper-a-init-fatal-exception.1339157