Third Party Mirror on Android OnSerialize failed

I've made a multiplayer game with Mirror which works well on windows. Now I've built it for android and tried to run it on my smartphone, but it didn't work. The app starts, the menu shows up, I can start a game (local), but nothing spawns (no player character, no monsters). LogCat is shows many of these errors:

11-11 19:37:40.644: E/Unity(15273): OnSerialize failed for: object=PlayerInfo(Clone) component=PlayerInfo sceneId=0
11-11 19:37:40.644: E/Unity(15273): System.NullReferenceException: Object reference not set to an instance of an object
11-11 19:37:40.644: E/Unity(15273): at Mirror.NetworkWriter.WriteBlittable[T] (T value) [0x00027] in <cbf6389b52654f31bb9df7969869197b>:0
11-11 19:37:40.644: E/Unity(15273): at Mirror.NetworkWriterExtensions.WriteSingle (Mirror.NetworkWriter writer, System.Single value) [0x00000] in <cbf6389b52654f31bb9df7969869197b>:0
11-11 19:37:40.644: E/Unity(15273): at PlayerInfo.SerializeSyncVars (Mirror.NetworkWriter writer, System.Boolean forceAll) [0x0019b] in <c91994f92e39415a912610fec1a5b0ad>:0
11-11 19:37:40.644: E/Unity(15273): at Mirror.NetworkBehaviour.OnSerialize (Mirror.NetworkWriter writer, System.Boolean initialState) [0x00017] in <cbf6389b52654f31bb9df7969869197b>:0
11-11 19:37:40.644: E/Unity(15273): at Mirror.NetworkIdentity.OnSerializeSafely (Mirror.NetworkBehaviour comp, Mirror.NetworkWriter writer, System.Boolean initialState) [0x00017] in <cbf6389b52654f31bb9df7969869197b>:0

PlayerInfo is the player prefab assigned to the NetworkManager.
It also shows these error after trying to spawn the character:

11-11 19:37:43.932: E/Unity(15273): OnSerialize failed for: object=Player(Clone) component=PlayerController sceneId=0
11-11 19:37:43.932: E/Unity(15273): System.NullReferenceException: Object reference not set to an instance of an object
11-11 19:37:43.932: E/Unity(15273): at Mirror.NetworkWriter.WriteBlittable[T] (T value) [0x00027] in <cbf6389b52654f31bb9df7969869197b>:0
11-11 19:37:43.932: E/Unity(15273): at Mirror.NetworkWriterExtensions.WriteSingle (Mirror.NetworkWriter writer, System.Single value) [0x00000] in <cbf6389b52654f31bb9df7969869197b>:0
11-11 19:37:43.932: E/Unity(15273): at PlayerController.SerializeSyncVars (Mirror.NetworkWriter writer, System.Boolean forceAll) [0x0000f] in <c91994f92e39415a912610fec1a5b0ad>:0
11-11 19:37:43.932: E/Unity(15273): at Mirror.NetworkBehaviour.OnSerialize (Mirror.NetworkWriter writer, System.Boolean initialState) [0x00017] in <cbf6389b52654f31bb9df7969869197b>:0
11-11 19:37:43.932: E/Unity(15273): at Mirror.NetworkIdentity.OnSerializeSafely (Mirror.NetworkBehaviour comp, Mirror.NetworkWriter writer, System.Boolean initialState) [0x00017] in <cbf6389b52654f31bb9df7969869197b>:0

The character never shows up.
I've no idea, where to start looking for this bug. I've tested different transports, It happens with Telepathy Transport and Ignorance Transport.
Does anybody have an idea?

 

I have the same error, although my player prefabs do show up. I am using SimpleWebTransport.

 

Try latest Mirror from Github, we fixed it
On some rare android devices, readers/writers had a problem if memory was unaligned.
Let me know if the fix works for you or not.

 

You are correct, the latest release worked for me. Thank you for your work vis2k

 

That was a team effort, I don't even have an android phone

 

Hi! Thanks for your replies and your work on fiixing it. Sorry for my late reply. I will test it this week.

 

Hi vis2k! I've just tried the latest version from github and I get the following compiler error at my script:

The code there is

Code (CSharp):

1. [Command(ignoreAuthority = true)]
2. public void CmdSetGunCooldownTime(float t)
3. {
4.         RpcSetGunCooldownTime(t);
5. }

I need the ignoreAuthority attribute at a few places. Can you say, why this attribute isn't recognised anymore?

 

Aside the ignoreAuthority, I can confirm that the top post from above are gone and objects seem to spawn correctly again. Thank you very much for fixing this!

 

it was renamed to requireAuthority, this avoids the double negative.
We couldn't add an obsolete path for that unfortunately

 

Ah, ok, cool. Thanks again!