Call to a member function getTimestamp() on boolean - php

Question

I got this error whatever format i changed, i have no idea what else causes of this. Can someone help me on this? My csv excel dateTime format is yyyy/mm/dd H:mm
$i = 0;
$len = count($map_column);
$insData = array();
foreach ($map_column as $key => $value) {
$i++;
if ($key == 'dateTime') {
$date = date_create_from_format('Y/m/d H:i:s', $row[$value]);
$timestamp = $date->getTimestamp();
$sql .= 'UNIX_TIMESTAMP('.$key . ') = "' . $timestamp . '"';
} else {
$sql .= $key . ' = "' . $row[$value] . '"';
}
$insData[$key] = $row[$value];
if ($i < $len) {
$sql .= ' AND ';
}
}
$result = mysqli_query($cons, $sql);
$r = mysqli_fetch_array($result);
$count = (int)$r['count'];
if ($count) {
return;
}
// pr($insData);
$columns = implode(", ",array_keys($insData));
$escaped_values = array_values($insData);
$values = implode("', '", $escaped_values);
$sql = "INSERT INTO hrar($columns) VALUES ('$values')";
if ($cons->query($sql)) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
}