Crash reported in crashlytics. Partial apply in closure #1 - ios

Question

I am getting a crash reported in crashlytics about partial apply in closure. I have tried other answers that mainly focus on using [weak self] but that didn't help. However, i am not getting a crash on my device.
According to the report the crash is somewhere in the function where i show my dropDown here is the code
func showDropDown(_ names: [String], forResult result: SearchPatientResultResponnse) {
guard let vc = viewController
else { return }
self.searchedPatientNames = result.data?.patientSearchSuggestions
Helpers.showSearchDropdown(anchorView: vc.searchBar.searchTextField, dataSource: names, scrollToTop: true, completion: { [weak self] (i, item) in
guard let self = self else {
return
}
vc.searchBar.text = item
vc.dismissKeyboard()
self.selectedSearchPatient = self.searchedPatientNames?[i]
if let d = self.searchedPatientNames?[i].dob {
vc.dobTF.text = DateTimeFormatters.userUIDateFormatterInUTC.string(from: d)
}
self.search(self.selectedSearchFilter)
}, fetchPaginationData: { [weak self] in
guard let self = self, !self.isNameSearchLastPage, self.page != -1 else {
return
}
vc.searchBar.isLoadingWithoutSearchIcon = true
self.fetchPatientNameNextPage()
}, cancel: { [weak self] in
self?.resetPaginationParams()
})
}
This is the function from where i am calling this showDropDown function
func getQueryPatientResponse() {
guard let vc = viewController else {
return
}
SocketIOManager.shared.queryResponseForPatient = { [weak self] result in
var names: [String] = []
self?.isNameSearchLastPage = result.data?.isLastPage ?? true
self?.page = result.data?.pageNumber ?? -1
for data in result.data?.patientSearchSuggestions ?? [] {
var name = ""
if !data.middleName.isEmpty {
name = data.firstName + " " + data.middleName + " " + data.lastName
} else {
name = data.firstName + " " + (data.lastName)
}
names.append(name)
}
vc.searchBar.isLoadingWithoutSearchIcon = false
self?.page == 1 ? self?.showDropDown(names, forResult: result) : self?.updateDropDown(names, forResult: result)
}
}
This is the crash report from crashlytics:-
Crashed: com.apple.main-thread
0 Ovada CM - PT 0x639b0 closure #1 in VisitStatusViewModel.showDropDown(_:forResult:)
+ 4340890032 (<compiler-generated>:4340890032)
1 Ovada CM - PT 0x3f328 partial apply for closure #1 in static Helpers.showSearchDropdown(anchorView:dataSource:scrollToTop:completion:fetchPaginationData:cancel:)
+ 121 (Helpers.swift:121)
2 Ovada CM - PT 0x15604c DropDown.tableView(_:didSelectRowAt:)
+ 4341882956 (<compiler-generated>:4341882956)
3 Ovada CM - PT 0x156548 #objc DropDown.tableView(_:didSelectRowAt:)
+ 4341884232 (<compiler-generated>:4341884232)
4 UIKitCore 0xfe36d0 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:isCellMultiSelect:deselectPrevious:]
+ 1640
5 UIKitCore 0xfe3050 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:]
+ 112
6 UIKitCore 0xfe394c -[UITableView _userSelectRowAtPendingSelectionIndexPath:]
+ 316
7 UIKitCore 0x30c240 -[_UIAfterCACommitBlock run] + 64
8 UIKitCore 0x227770 -[_UIAfterCACommitQueue flush] + 200
9 UIKitCore 0x155eb0 _runAfterCACommitDeferredBlocks + 640
10 UIKitCore 0x15657c _cleanUpAfterCAFlushAndRunDeferredBlocks + 128
11 UIKitCore 0x156748 _afterCACommitHandler + 56
12 CoreFoundation 0x3e83c _CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION_ + 32
13 CoreFoundation 0xfa74 __CFRunLoopDoObservers + 616
14 CoreFoundation 0xaffc __CFRunLoopRun + 1012
15 CoreFoundation 0x1e250 CFRunLoopRunSpecific + 572
16 GraphicsServices 0x1988 GSEventRunModal + 160
17 UIKitCore 0x4e5a94 -[UIApplication _run] + 1080
18 UIKitCore 0x27efd4 UIApplicationMain + 336
19 Ovada CM - PT 0x6070 main + 14 (AppDelegate.swift:14)
20 ??? 0x1029dc4d0 (Missing)