[Magento 2.4.4] Class magento/zendframework1/library/Zend/Pdf/NameTree.php not compatible with PHP 8.1

[magentix]

Preconditions (*)

1. Magento 2.4.4
2. PHP 8.1

Steps to reproduce (*)

1. Go to the Sales Shipments page in admin. Select shipments and the "Print Shipping Labels" action.

Expected result (*)

1. Get a PDF with all the shipment labels

Actual result (*)

1. PHP crashes with the following error :

Fatal error: During inheritance of ArrayAccess: Uncaught Exception: Deprecated Functionality: Return type of Zend_Pdf_NameTree::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in vendor/magento/zendframework1/library/Zend/Pdf/NameTree.php on line 117

The error happens with the Magento\Shipping\Model\Shipping\LabelGenerator::combineLabelsPdf method.

Additional Information: Please refer below comment:

https://github.com/magento/magento2/issues/35335#issuecomment-1103902652

---

Please provide Severity assessment for the Issue as Reporter. This information will help during Confirmation and Issue triage processes.

• [ ] Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• [x] Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• [*] Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• [ ] Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

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[engcom-November]

@magento give me 2.4-develop instance

[magento-deployment-service[bot]]

Hi @engcom-November. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service[bot]]

Hi @engcom-November, unfortunately there is no ability to deploy Magento instance at the moment. Please try again later.

[engcom-November]

Verified the issues on Magento 2.4-develop branch and 2.4.4 versions and the issue is reproducible on 2.4.4 instance but not on 2.4-develop branch. Steps performed:

1. Configure Fedex shipping method as per https://jira.corp.magento.com/browse/MC-27213
2. Frontend - Login as customer - Created Order
3. Submit Invoice from admin
4. Ship - Create Shipping Label and Submit
5. Go to Sales - Shipments - Select shipment and Print Shipping Labels Issue:

[github-jira-sync-bot]

:white_check_mark: Jira issue https://jira.corp.magento.com/browse/AC-2892 is successfully created for this GitHub issue.

[m2-assistant[bot]]

:white_check_mark: Confirmed by @engcom-November. Thank you for verifying the issue.
Issue Available: @engcom-November, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[Vishrootways]

Facing the same issue. If this is a known issue then does any patch available to fix this issue?

[hostep]

@Vishrootways: try updating magento/zendframework1 to version 1.15.1, see https://github.com/magento/zf1/pull/46#issuecomment-1165267804

[Vishrootways]

@hostep Updating magento/zendframework1 to version 1.15.1 works. Thank you

[Nuranto]

This is issue is only partially fixed in 1.15.1.

I still got error, but in different file :

PHP Fatal error: During inheritance of ArrayAccess: Uncaught Exception: Deprecated Functionality: Return type of Zend_Memory_Value::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/html/vendor/magento/zendframework1/library/Zend/Memory/Value.php 

=> magento/zendframework1/library/Zend/Memory/Value.php

Here's a patch :

--- a/library/Zend/Memory/Value.php
+++ b/library/Zend/Memory/Value.php
@@ -86,7 +86,7 @@
      * @param integer $offset
      * @return boolean
      */
-    public function offsetExists($offset)
+    public function offsetExists(mixed $offset): bool
     {
         return $offset >= 0  &&  $offset < strlen($this->_value);
     }
@@ -98,7 +98,7 @@
      * @param integer $offset
      * @return string
      */
-    public function offsetGet($offset)
+    public function offsetGet(mixed $offset): mixed
     {
         return $this->_value[$offset];
     }
@@ -110,7 +110,7 @@
      * @param integer $offset
      * @param string $char
      */
-    public function offsetSet($offset, $char)
+    public function offsetSet(mixed $offset, mixed $value): void
     {
         $this->_value[$offset] = $char;

@@ -126,7 +126,7 @@
      *
      * @param integer $offset
      */
-    public function offsetUnset($offset)
+    public function offsetUnset(mixed $offset): void
     {
         unset($this->_value[$offset]);

[hostep]

@Nuranto: could you report this as a new issue on https://github.com/magento/zf1/issues? I think it will get picked up sooner that way, thanks! 🙂

[Nuranto]

Done 👍

[magentix]

Hi!

Fixed for me after zendframework1 1.15.1 upgrade:

Updating magento/zendframework1 (1.15.0 => 1.15.1): Downloading (connecting.Downloading (100%)

[SPbryan007]

@magento give me 2.4.5-p1 instance

[magento-deployment-service[bot]]

Hi @SPbryan007. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service[bot]]

Hi @SPbryan007, here is your Magento Instance: https://72f6bd7b7d0063653c526ba435e0f2f8.instances.magento-community.engineering Admin access: https://72f6bd7b7d0063653c526ba435e0f2f8.instances.magento-community.engineering/admin_9959 Login: 0a17b5ea Password: 8ca9eca47982