Upgrade Wizard should report more information on exception
If one of the update wizards throws an exception, a very general (and sometimes misleading) error message is displayed:
A better option might be, in addition to this error message:
Something went wrong. Please use Check for broken extensions to see if a loaded extension breaks this part of the install tool and unload it.
- Provide a message that an error might be in the "Log" (sys_log) and a link to the "Log" module
- Even in Preset debug, the exception is not displayed. Maybe the exception should be displayed, if
$GLOBALS['TYPO3_CONF_VARS']['BE']['debug'] == true.