rpc error: code = Canceled desc = context canceled

I am running 3 docker containers, let's say:

1. container-1 (node.js application)
2. container-2 (Golang application)
3. container-3 (Golang application)

All these containers communicate using gRPC.

I am doing a unary RPC (Request/Reply) call in container-1 which calls a method of container-2. This method performs various operations and calls numerous unary RPCs (~20) of container-3.

During the whole process sometimes I get the following error (note: not every time, even my input data is same):

rpc error: code = Canceled desc = context canceled

And whenever the error comes, it occurs at one of the last 4-5 RPCs calls (in container-2).

One thing I observed that this error comes after ~1 min from when I started the process.

So,

1. There might be some default context time after the context gets canceled. If it is, how can I increase that time?
2. Can anyone please explain to me if there is something I am missing in the context or gRPC in Golang.

Thank you.

Edit:

Following is the gist code that shows how I am connecting and calling the RPC:

// load proto
const proto = await grpc.load(PROTO_PATH);

// connect to service
const SERVICE = new proto.types.MyService(SERVICE_ADDR, grpc.credentials.createInsecure(), {
    "grpc.keepalive_time_ms"             : (5 * 60 * 1000),
    "grpc.keepalive_permit_without_calls": 1,
})

// calling RPC
SERVICE.sync({
    id:     Id,
}, (err, resp) => {
    if (err) {
        return reject(err);
    }

    if (!resp.success) {
        return reject(new Error(`Action error: ${resp.intended_action}: ${resp.reason}`));
    }

    resolve(resp.intended_action);
});