Hi, I have this situation
- Fresh install
- Install Views Accordion
- Create a View and in format select accordion
- try to save this view
You can´t save the View, now when visit the report page it shows this
""TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "views_element_validate_integer" not found or invalid function name in _form_validate() (line 1497 of /public_html/test/core/includes/form.inc).""
Tested in 1.24.2, 1.25.0 and 1.25.1 with the same results.
I've tagged the module maintainer (Laryn) in Zulip, our chat channel, so hopefully you will get a response soon.
What version of PHP are you using?