What does it mean by Thread 1: signal SIGABRT

Using Swift
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1

Hi. I'm trying to get ESP32's Bluetooth connected to the iOS app (GitHub - JoaoLopesF/Esp-Mobile-Apps-iOS: Esp-Mobile-Apps is a set of examples apps to start making Esp32 BLE devices connected to mobile applications (Android and iOS)), but the app crashed after I clicked Terminal BLE. I'm very new to swift and Bluetooth, so I have no clue how to fix this. Can someone please help me to figure this out?

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Output:

18.269 📙A Debug.debugSetLevel: debug: level setted to 📘V-Verbose 
18.270 📘V MainController.initializeApp: Initilializing ... 
18.271 📘V MainController.initializeApp: Initialized 
18.346 📘V ConnectingViewController.viewDidLoad:  
18.412 📘V ConnectingViewController.viewWillDisappear:  
18.413 📘V MainMenuViewController.viewWillAppear:  
18.427 📘V MainMenuViewController.tableView: code->  INFO 
18.432 📘V MainMenuViewController.tableView: code->  TERMINAL 
18.436 📘V MainMenuViewController.tableView: code->  SETTINGS 
2019-12-05 23:36:18.436265-0500 EspApp[2349:137801] Metal API Validation Enabled
21.099 📘V MainMenuViewController.tableView: code of menu selected: TERMINAL 
21.109 📘V MainMenuViewController.viewWillDisappear:  
21.109 📘V TerminalBLEViewController.viewWillAppear:  
2019-12-05 23:36:21.145989-0500 EspApp[2349:137801] *** Terminating app due to uncaught exception 'NSRangeException', reason: 'Attempted to scroll the table view to an out-of-bounds row (0) when there are only 0 rows in section 0. Table view: <UITableView: 0x7fc6808eac00; frame = (0 140; 414 670); clipsToBounds = YES; autoresize = RM+BM; tintColor = UIExtendedSRGBColorSpace 0 0.560318 0 1; gestureRecognizers = <NSArray: 0x6000032df420>; layer = <CALayer: 0x600003c2c720>; contentOffset: {0, 0}; contentSize: {414, 0}; adjustedContentInset: {0, 0, 0, 0}; dataSource: <EspApp.TerminalBLEViewController: 0x7fc68063a150>>'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff23baa1ee __exceptionPreprocess + 350
	1   libobjc.A.dylib                     0x00007fff50864b20 objc_exception_throw + 48
	2   CoreFoundation                      0x00007fff23baa02c +[NSException raise:format:] + 188
	3   UIKitCore                           0x00007fff47757b04 -[UITableView _contentOffsetForScrollingToRowAtIndexPath:atScrollPosition:usingPresentationValues:] + 812
	4   UIKitCore                           0x00007fff47758697 -[UITableView _scrollToRowAtIndexPath:atScrollPosition:animated:usingPresentationValues:] + 142
	5   UIKitCore                           0x00007fff47758543 -[UITableView scrollToRowAtIndexPath:atScrollPosition:animated:] + 135
	6   EspApp                              0x00000001016bb1d0 $s6EspApp25TerminalBLEViewControllerC10reloadDatayyFyycfU_ + 704
	7   EspApp                              0x00000001016bb4bd $sIeg_IeyB_TR + 45
	8   libdispatch.dylib                   0x00000001025d9df8 _dispatch_call_block_and_release + 12
	9   libdispatch.dylib                   0x00000001025dad6c _dispatch_client_callout + 8
	10  libdispatch.dylib                   0x00000001025e8e24 _dispatch_main_queue_callback_4CF + 1500
	11  CoreFoundation                      0x00007fff23b0ce49 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
	12  CoreFoundation                      0x00007fff23b07aa9 __CFRunLoopRun + 2329
	13  CoreFoundation                      0x00007fff23b06e66 CFRunLoopRunSpecific + 438
	14  GraphicsServices                    0x00007fff38346bb0 GSEventRunModal + 65
	15  UIKitCore                           0x00007fff47578dd0 UIApplicationMain + 1621
	16  EspApp                              0x00000001016e9288 main + 72
	17  libdyld.dylib                       0x00007fff516ecd29 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
2 
Terminating app due to uncaught exception 'NSRangeException', reason: 'Attempted to scroll the table view to an out-of-bounds row (0) when there are only 0 rows in section 0. Table view: <UITableView: 0x7fc6808eac00; frame = (0 140; 414 670); clipsToBounds = YES; autoresize = RM+BM; tintColor = UIExtendedSRGBColorSpace 0 0.560318 0 1; gestureRecognizers = <NSArray: 0x6000032df420>; layer = <CALayer: 0x600003c2c720>; contentOffset: {0, 0}; contentSize: {414, 0}; adjustedContentInset: {0, 0, 0, 0}; dataSource: <EspApp.TerminalBLEViewController: 0x7fc68063a150>>'
3

Hi John. So what do I need to do?

4

Don't try to scroll to a cell into an empty table view. I feel that this question is off-topic for this forum, as it pertains to proper usage of UITableView, and is not about the Swift language.

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