Need help with my code, keep getting this error$-$ Exited with return code $-6($SIGABRT$).$ free$()$: double free detected in tcache $2.$

#include

#include

using namespace std;

class MileageTrackerNode $\{$

public:

double miles;

string date;

MileageTrackerNode$*$ nextNodePtr;

$//$ Constructor

MileageTrackerNode$($double miles, string date$)$ : miles$($miles$),$ date$($date$),$ nextNodePtr$($nullptr$)\{\}$

$//$ InsertAfter function

void InsertAfter$($MileageTrackerNode$*$ nodePtr$)\{$

nodePtr$->$nextNodePtr $=$ this$->$nextNodePtr;

this$->$nextNodePtr $=$ nodePtr;

$\}$

$//$ PrintNodeData function

void PrintNodeData$()\{$

cout $<<$ miles $<<","<<$ date $<<$ endl;

$\}$

$\}$;

int main$()\{$

int numNodes;

cin $>>$ numNodes;

$//$ Dummy head node $($not to be printed$)$

MileageTrackerNode$*$ headNode $=$ new MileageTrackerNode$(0,"")$;

MileageTrackerNode$*$ lastNode $=$ headNode;

$//$ Reading nodes and building the linked list

for $($int i $=0$; i $<$ numNodes; $++$i$)\{$

double miles;

string date;

cin $>>$ miles $>>$ date;

MileageTrackerNode$*$ newNode $=$ new MileageTrackerNode$($miles$,$ date$)$;

lastNode$->$InsertAfter$($newNode$)$;

lastNode $=$ newNode; $//$ Move to the new last node

$\}$

$//$ Printing nodes $($skipping the dummy head node$)$

MileageTrackerNode$*$ currentNode $=$ headNode$->$nextNodePtr;

while $($currentNode $!=$ nullptr$)\{$

currentNode$->$PrintNodeData$()$;

currentNode $=$ currentNode$->$nextNodePtr;

$\}$

$//$ Cleanup $($free allocated memory$)$

currentNode $=$ headNode;

while $($currentNode $!=$ nullptr$)\{$

MileageTrackerNode$*$ tempNode $=$ currentNode;

currentNode $=$ currentNode$->$nextNodePtr;

delete tempNode;

$\}$

return $0$;

$\}$