'-[BRACell attributedStringValue] is not implemented in BRACell'，Error reported using version 2.3.2

[vlay1314]

I added my own xlxs file and reported an error, the error is as follows： Assertion failure in -[BRACell attributedStringValue], BRACell.m:333 Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[BRACell attributedStringValue] is not implemented in BRACell' *** First throw call stack: ( 0 CoreFoundation 0x00007ff8004cd571 __exceptionPreprocess + 242 1 libobjc.A.dylib 0x00007ff8000837e8 objc_exception_throw + 48 2 Foundation 0x00007ff800dd95e4 _userInfoForFileAndLine + 0 3 XlsxReaderWriter 0x000000010b3b6d73 -[BRACell attributedStringValue] + 1363 4 XlsxReaderWriter 0x000000010b3b67d8 -[BRACell stringValue] + 40 5 ContactsApp 0x0000000109a6859d -[CallViewController viewDidLoad] + 2797 6 UIKitCore 0x00007ff8052effee -[UIViewController _sendViewDidLoadWithAppearanceProxyObjectTaggingEnabled] + 80 7 UIKitCore 0x00007ff8052f60e6 -[UIViewController loadViewIfRequired] + 1342 8 UIKitCore 0x00007ff805211b2b -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 159 9 UIKitCore 0x00007ff805211e5f -[UINavigationController _startTransition:fromViewController:toViewController:] + 210 10 UIKitCore 0x00007ff805213035 -[UINavigationController _startDeferredTransitionIfNeeded:] + 856 11 UIKitCore 0x00007ff805214495 -[UINavigationController viewWillLayoutSubviews] + 136 12 UIKitCore 0x00007ff8051f0de2 -[UILayoutContainerView layoutSubviews] + 207 13 UIKitCore 0x00007ff8063bff3c -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2138 14 QuartzCore 0x00007ff80b19a775 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 527 15 QuartzCore 0x00007ff80b1a65a1 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 67 16 QuartzCore 0x00007ff80b0c5cf4 _ZN2CA7Context18commit_transactionEPNS_11TransactionEdPd + 706 17 QuartzCore 0x00007ff80b10082a _ZN2CA11Transaction6commitEv + 728 18 UIKitCore 0x00007ff805cfed8f 34-[UIApplication _firstCommitBlock]_block_invoke_2 + 34 19 CoreFoundation 0x00007ff800429dea CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK + 12 20 CoreFoundation 0x00007ff80042959d CFRunLoopDoBlocks + 391 21 CoreFoundation 0x00007ff800423e7c CFRunLoopRun + 940 22 CoreFoundation 0x00007ff8004236ed CFRunLoopRunSpecific + 557 23 GraphicsServices 0x00007ff8103ba08f GSEventRunModal + 137 24 UIKitCore 0x00007ff805cdf6ee -[UIApplication _run] + 972 25 UIKitCore 0x00007ff805ce416e UIApplicationMain + 123 26 ContactsApp 0x0000000109a3f686 main + 118 27 dyld 0x0000000109f023e0 start_sim + 10 28 ??? 0x0000000115ed7366 0x0 + 4662850406 ) libc++abi: terminating due to uncaught exception of type NSException