Crash on -[PostSettingsViewController viewDidLoad]

[koke]

PostSettingsViewController.m line 144
__41-[PostSettingsViewController viewDidLoad]_block_invoke

Fatal Exception NSInvalidArgumentException
-[__NSCFBoolean length]: unrecognized selector sent to instance 0x3ab41538

Relevant code:

            [self.post getFeaturedImageURLWithSuccess:^{
                if (self.post.featuredImageURL) {
                    NSURL *imageURL = [[NSURL alloc] initWithString:self.post.featuredImageURL];

Feels unlikely that self.post.featuredImageURL can be a boolean, so maybe related to memory-management