diff --git a/interface/forms/LBF/new.php b/interface/forms/LBF/new.php
index 8b68786980c..1c86e59d855 100644
--- a/interface/forms/LBF/new.php
+++ b/interface/forms/LBF/new.php
@@ -930,7 +930,7 @@ function warehouse_changed(sel) {
                                 array($formname, $formid)
                             );
                             $form_issue_id = empty($firow['issue_id']) ? 0 : intval($firow['issue_id']);
-                            $default = empty($firow['provider_id']) ? $_SESSION['authUserID'] : intval($firow['provider_id']);
+                            $default = empty($firow['provider_id']) ? ($_SESSION['authUserID'] ?? null) : intval($firow['provider_id']);
 
                             if (!$patient_portal) {
                                 // Provider selector.
@@ -1834,7 +1834,7 @@ function warehouse_changed(sel) {
 
                 <?php if (!$from_trend_form) { // end row and container divs ?>
                     <p style='text-align:center' class='small'>
-                        <?php echo text(xl('Rev.') . ' ' . substr($grp_last_update, 0, 10)); ?>
+                        <?php echo text(xl('Rev.') . ' ' . substr($grp_last_update ?? '', 0, 10)); ?>
                     </p>
 
                 <?php } ?>
diff --git a/interface/patient_file/deleter.php b/interface/patient_file/deleter.php
index 97d2e14fc07..57621a49bb0 100644
--- a/interface/patient_file/deleter.php
+++ b/interface/patient_file/deleter.php
@@ -169,6 +169,8 @@ function form_delete($formdir, $formid, $patient_id, $encounter_id)
         }
         row_delete("form_eye_mag_impplan", "form_id = '" . add_escape_custom($formid) . "'");
         row_delete("form_eye_mag_wearing", "FORM_ID = '" . add_escape_custom($formid) . "'");
+    } elseif ($formdir == 'form_HIS') {
+        // when history form is entered in portal, just ignore...
     } else {
         row_delete("form_$formdir", "id = '" . add_escape_custom($formid) . "'");
     }
diff --git a/portal/patient/fwk/libs/verysimple/Phreeze/Phreezable.php b/portal/patient/fwk/libs/verysimple/Phreeze/Phreezable.php
index f9893acecb5..b1159fae0b5 100644
--- a/portal/patient/fwk/libs/verysimple/Phreeze/Phreezable.php
+++ b/portal/patient/fwk/libs/verysimple/Phreeze/Phreezable.php
@@ -410,7 +410,7 @@ private function _DoBaseValidation()
                     if ($left > $limitLeft || $right > $limitRight) {
                         $this->AddValidationError($prop, "$prop exceeds the maximum length of " . $fm->FieldSize . "");
                     }
-                } elseif (is_numeric($fm->FieldSize) && ($lenfunction($this->$prop) - 1 > $fm->FieldSize)) {
+                } elseif (is_numeric($fm->FieldSize) && ($lenfunction($this->$prop ?? '') - 1 > $fm->FieldSize)) {
                     $this->AddValidationError($prop, "$prop exceeds the maximum length of " . $fm->FieldSize . "");
                 }
 
diff --git a/portal/patient/fwk/libs/verysimple/Phreeze/Phreezer.php b/portal/patient/fwk/libs/verysimple/Phreeze/Phreezer.php
index 9b230bf3d50..d97aa7cf0ed 100644
--- a/portal/patient/fwk/libs/verysimple/Phreeze/Phreezer.php
+++ b/portal/patient/fwk/libs/verysimple/Phreeze/Phreezer.php
@@ -557,7 +557,7 @@ public function Save($obj, $force_insert = false)
         $table = $fms [$pk]->TableName;
         $pkcol = $fms [$pk]->ColumnName;
         $returnval = "";
-        $pk_is_auto_insert = strlen($id) == 0;
+        $pk_is_auto_insert = strlen($id ?? '') == 0;
     // if there is no value for the primary key, this is an insert
         $is_insert = $force_insert || $pk_is_auto_insert;
     // fire the OnSave event in case the object needs to prepare itself