How can I solve an Error or ANR shown on Play Store Developers control panel?

Hello, I received an Application Error on my new released App:

java.lang.Error: FATAL EXCEPTION [UnityMain]
Unity version : 5.5.0p1
Device model : WIKO RAINBOW JAM
Device fingerprint: WIKO/s5254/s5254:5.1/LMY47I/1438586587:user/release-keys

Caused by: java.lang.Error: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000000
Build fingerprint: 'WIKO/s5254/s5254:5.1/LMY47I/1438586587:user/release-keys'
Revision: '0'
pid: 4376, tid: 4400, name: UnityMain >>> com.www_3dart_es.ReyesMagosRA <<<
r0 a1ae11fc r1 00000007 r2 00000000 r3 00000000
r4 a1bd52f8 r5 a1ae0010 r6 a1ade750 r7 ffffe97c
r8 000011ec r9 00000001 sl 00000002 fp 00000002
ip 0000002c sp a2f41568 lr ffffffff pc a354da3c cpsr 753a3738

at libunity.0050da3c(Native Method)
at libunity.00218f88(Native Method)
at libunity.004acb3c(Native Method)
at libunity.004ac9cc(Native Method)
at libunity.004af020(Native Method)
at libunity.004b02a8(Native Method)
at libunity.00174ac0(Native Method)
at libunity.002121b4(Native Method)
at libunity.0021217c(Native Method)
at libunity.004acb3c(Native Method)
at libunity.004aca0c(Native Method)
at libunity.004af020(Native Method)
at libunity.004b02a8(Native Method)
at libunity.002eb8f8(Native Method)
at libunity.0020806c(Native Method)
at libunity.0053c178(Native Method)
at libunity.0053e9e8(Native Method)
at data@app@com.0030a427(Native Method)

I don´t know how I can solve this. The user put a comment that says “after install the app it failed at launch”.

Any hint?

Thanks in advance.

it is supposed that we can´t do anything to solve this and is matter of Unity programmers?.

Should I make a bug report about this?.

Regards.

This is the stack trace after processing it using addr2line (from the NDK):

what can I do with this code?. This seems to be the Unity initialization code (that I can´t touch)

You can use it to report a bug to Unity or check if there’s an existing bug that is related to that code.

Ok, thanks you.