Invalid argument: UNTIL or COUNT in the same rule

Problem/Motivation

Error message
InvalidArgumentException: The UNTIL or COUNT rule parts MUST NOT occur in the same rule in RRule\RRule->__construct() (line 303 of vendor/rlanvin/php-rrule/src/RRule.php).

Steps to reproduce

• Create an event with 10 occurences.
• Click on the third of them, and select "Edit future"
• Change the time
• Save

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes