FirebaseStorage Completion block not called. Objective-C - objective-c

Question

I am trying to simply load in a picture from firebase storage into my IOS app, but my completion block is not being called.
I use a TableViewController initially which loads plenty of pictures just fine. When I click on an item in the tableview it presents a simple view controller modally. I use the same code that successfully loads pictures in the TableViewController. In this modally presented view controller, my FirebaseStorage completion blocks do not execute. When I exit this view controller, the TableViewController can still load load pictures as necessary as I request.
I have enabled logging with -FIRAnalyticsDebugEnabled
and still do not receive any errors in my log.
I have allowed all read and writes temporarily in my rules for FirebaseStorage.
I have seen this question iOS setValue withCompletionBlock not called which states in the comments that a specific version of firebase had some issue with FirebaseDatabase blocking some other completion blocks.
The documentation said "Fixed a race condition where performing a transaction or adding an event observer immediately after connecting to the Firebase Realtime Database service could cause completion blocks for other operations to not be executed." from https://firebase.google.com/support/release-notes/ios#3.6.0
In the above question the asker fixed the problem by upgrading to Firebase 3.7.1, I am using 5.0.1
Here are the versions I am using
Using Firebase (5.0.1)
Using FirebaseAnalytics (5.0.0)
Using FirebaseAuth (5.0.0)
Using FirebaseCore (5.0.1)
Using FirebaseDatabase (5.0.0)
Using FirebaseInstanceID (3.0.0)
Using FirebaseStorage (3.0.0)
Using GTMSessionFetcher (1.1.15)
Using GoogleToolboxForMac (2.1.4)
Using leveldb-library (1.20)
Using nanopb (0.3.8)
Generating Pods project
I have logged all along my code to find that my code is being called, but the completion block is never executed. I am using the proper children ids, so I know that the storage reference does exist. I also know it is not a connection problem because the other pictures load fine just seconds before.
- (void)loadPicture {
NSLog(#"Attempting to load picture");
FIRStorageReference *ref = [[self.storageRef child:self.detailItem.faction] child:[self.detailItem firebaseEntry]];
[ref dataWithMaxSize:1024*1024 completion:^(NSData * _Nullable data, NSError * _Nullable error) {
NSLog(#"Got a result!");
}];
I am completely lost on what steps to take next. Has anyone experienced something similar or have any advice?
I appreciate any feedback that might help! Thanks!

Answer 1

Import this first
#import "UIImageView+FirebaseStorage.h"
and then for load image From reference use this
FIRStorageReference *gsReference = [[self.storageRef child:self.detailItem.faction] child:[self.detailItem firebaseEntry]];
[yourImage sd_setImageWithStorageReference:gsReference placeholderImage:nil];

Answer 2

I have solved the problem by creating a new ViewController to do the same action from scratch. Unfortunately I don't know what the original problem was or how to reproduce it. My original ViewController was about as simple as possible. The problem seemed like a strange glitch/flaw in the API, xcode, or emulator since no errors were present and it fixed itself in the new ViewController using the same exact code.
Everything else I saw online pointed to a issue involving Firebase 3.6.0 and below. Make sure you are using a recent Firebase version and then recreate the same ViewController and your problem will likely be fixed.