@seejaneworkit - Do you find any solution to the above sort of crash report? I have similar issue with my application. I have background task enabled for the application. 0  libsystem_kernel.dylib     0x00000001d82ed7b0 __pthread_kill + 8 1  libsystem_pthread.dylib     0x00000001f49a09c0 pthread_kill + 212 (pthread.c:1582) 2  libsystem_c.dylib        0x00000001b5136a38 abort + 120 (abort.c:118) 3  libsystem_malloc.dylib     0x00000001bb06c0a8 malloc_vreport + 556 (malloc_printf.c:183) 4  libsystem_malloc.dylib     0x00000001bb06c31c malloc_zone_error + 100 (malloc_printf.c:219) 5  libsystem_malloc.dylib     0x00000001bb052958 nanov2_allocate_from_block$VARIANT$armv81 + 520 6  libsystem_malloc.dylib     0x00000001bb051bd8 nanov2_allocate$VARIANT$armv81 + 124 7  libsystem_malloc.dylib     0x00000001bb0520c4 nanov2_calloc$VARIANT$armv81 + 148 8  libsystem_malloc.dylib     0x00000001bb061bd0 _malloc_zone_calloc + 80 (malloc.c:1604) 9  libobjc.A.dylib         0x00000001c0289124 _objc_rootAllocWithZone + 36 (objc-runtime-new.mm:8000) 10 libobjc.A.dylib         0x00000001c0292ec4 objc_alloc_init + 32 (NSObject.mm:1929) 11 UIFoundation          0x00000001b50343c8 -[NSCoreTypesetter _NSFastDrawString:length:attributes:paragraphStyle:typesetterBehavior:lineBreakMode:rect:padding:graphicsContext:baselineRendering:usesFontLeading:usesScreenFont:scrollable:syncA... + 4696 (NSCoreTypesetter.m:817) 12 UIFoundation          0x00000001b5034970 -[NSCoreTypesetter _stringDrawingCoreTextEngineWithOriginalString:rect:padding:graphicsContext:forceClipping:attributes:stringDrawingOptions:drawingContext:stringDrawingInterface:] + 1116 (NSCoreTypesetter.m:1260) 13 UIFoundation          0x00000001b50300c4 __NSStringDrawingEngine + 1652 (NSStringDrawing.m:1568) 14 UIFoundation          0x00000001b4f9bd5c -[NSString(NSExtendedStringDrawing) boundingRectWithSize:options:attributes:context:] + 156 (NSStringDrawing.m:1025) 15 UIKitCore            0x00000001af1ee060 -[UILabel _textRectForBounds:limitedToNumberOfLines:includingShadow:] + 1220 (UILabel.m:0) 16 UIKitCore            0x00000001af1f1f2c -[UILabel _intrinsicSizeWithinSize:] + 484 (UILabel.m:2981) 17 UIKitCore            0x00000001af1f112c -[UILabel _ensureBaselineMetricsReturningBounds] + 172 (UILabel.m:2805) 18 UIKitCore            0x00000001af1f1344 -[UILabel _baselineOffsetFromBottom] + 92 (UILabel.m:2838) 19 UIKitCore            0x00000001af1efe24 -[UILabel _invalidateBaselineConstraints] + 92 (UILabel.m:2430) 20 UIKitCore            0x00000001af1e9140 -[UILabel _setContent:adjustingFontForAccessibilityTraits:checkingForDifferences:] + 608 (UILabel.m:591) 21 UIKitCore            0x00000001af1eec1c -[UILabel _setText:] + 152 (UILabel.m:2013)