Prerequisites

• I have searched for duplicate or closed issues
• I can recreate the issue with all plugins disabled

Describe the issue

Running the 1.7 Beta. Everything works normally, but after a while, the tab content is replaced by the error:

Oops... something went wrong!
An internal error has occurred. Your request cannot be processed at this time.

I would guess that this happens upon an autoreload. See the php error message attached below.

What browser(s) are you seeing the problem on?

Firefox

What version of PHP are you using?

8.2

What version of Roundcube are you using?

1.7beta

JavaScript errors

No response

PHP errors

[17-Aug-2025 16:30:02 UTC] PHP Fatal error: Uncaught TypeError: html::quote(): Argument #1 ($str) must be of type string, null given, called in /var/www/html/rc/program/include/rcmail_output_html.php on line 1653 and defined in /var/www/html/rc/program/lib/Roundcube/html.php:392
Stack trace:
#0 /var/www/html/rc/program/include/rcmail_output_html.php(1653): html::quote()
#1 [internal function]: rcmail_output_html->xml_command()
#2 /var/www/html/rc/program/include/rcmail_output_html.php(1339): preg_replace_callback()
#3 /var/www/html/rc/program/include/rcmail_output_html.php(816): rcmail_output_html->parse_xml()
#4 /var/www/html/rc/program/include/rcmail_output_html.php(650): rcmail_output_html->parse()
#5 /var/www/html/rc/program/include/rcmail.php(293): rcmail_output_html->send()
#6 /var/www/html/rc/public_html/index.php(265): rcmail->action_handler()
#7 {main}
thrown in /var/www/html/rc/program/lib/Roundcube/html.php on line 392