sugiarto

This should help. https://stackoverflow.com/a/25647197/5552022 So change from ```java device.createRfcommSocketToServiceRecord(uuid); // or device.createInsecureRfcommSocketToServiceRecord(uuid); ``` to ```java socket = (BluetoothSocket) device.getClass().getMethod("createRfcommSocket", new Class[] {int.class}).invoke(device, 1); ```

I got similar issue. ``` E/flutter ( 5034): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: PlatformException(error, Field devices_ for b.c.a.u not found. Known fields are [private b.b.a.b0$i b.c.a.u.e, private static final b.c.a.u b.c.a.u.f, private...

I fixed this issue on release build by disable shrinkResources at ```android/app/build.gradle``` ``` buildTypes { release { // TODO: Add your own signing config for the release build. // Signing...

For me, I upgraded to use spring 2.1.0 and worked.

When I used my digitup printer, I got error because this printer doesn't have characteristics with properties.write == true. But This device has properties.writeWithoutResponse == true. So my PR actually...

> Hi, thank you for contributing to this repository! However, since I don't know what printer you're using with this library, could you please give me a link to it?...

In my case, I solved by chown the folder with `1000` user id. Where `user id` for `someuser` is `1000` `chown -R someuser:someuser /root/my_uploads` Where on `config/deploy.rb` ```yaml volumes: -...