Benjamin Franzke authored Jun 08, 2020 and Benni Mack committed Mar 11, 2021

FileReferences objects contain references to File
objects which itself contain service dependencies
(e.g. event dispatcher) which are not seralizable.

This leads to problems for instance when having
a multi-step form containing file uploads where
file reference objects are being serialized.

For TYPO3 v9.5 there is no direct exception, but serialized
data still contained lots of superfluous information. That's
why this change is back-ported to v9.5 as well.

Resolves: #91196
Releases: master, 10.4, 9.5
Change-Id: I7650186adc5c61528e1a1adcf06b8d6cf67a55cd
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/68341


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>