Attempt to read property uid [nid] on bool

patch1 reslove this issue

Could you not just add && is_object($submission) to each of the existing two lines? Or perhaps isset() should be !empty().

Mohd Sahzad 🐛 Attempt to read property uid [nid] on bool Needs review : I think your patch doesn't ensure that "$submission->uid", "$submission->sid" and "$node->uid" exist?
How is your patch better than the two suggestions I gave?:
$access_own_submission = !empty($submission) && !empty($submission->uid) && !empty($submission->sid) && user_access('access own webform submissions', $account) && (($account->uid && $account->uid == $submission->uid) || isset($_SESSION['webform_submission'][$submission->sid]));
and
$access_node_submissions = !empty($node->uid) && user_access('access own webform results', $account) && $account->uid == $node->uid;

Alternative patch. I think it's more safe.