$frames = array_map( function ( $frame ) use ( $frameFormat ) {
$file = !empty( $frame['file'] ) ? basename( $frame['file'] ) : '-';
- $line = $frame['line'] ?: '-';
+ $line = isset( $frame['line'] ) ? $frame['line'] : '-';
$call = $frame['function'];
if ( !empty( $frame['class'] ) ) {
$call = $frame['class'] . $frame['type'] . $call;