Is this a new problem or has this always been a problem on your Moodle site? Did you recently upgrade Moodle or the Configurable Reports plugin? If you recently did an upgrade was the Configurable Report working before the upgrade?
Moodle and PHP have debugging options that enable Moodle to display extra information when a problem like this occurs and record the problem details in a log file. When the debugging options are not enabled (they aren't by default) Moodle just displays that "white screen" (because it was not able to recover from the error). Have a look at https://docs.moodle.org/38/en/Debugging#Enabling_debugging and then enable the Debugging options in Moodle. Then try to reproduce the problem again in Moodle so that details of the problem can be displayed. You should then see an error message in Moodle (or in the PHP log file) when the problem is triggered again. Share those error details here so we can try to decode it.
Moodle and PHP have debugging options that enable Moodle to display extra information when a problem like this occurs and record the problem details in a log file. When the debugging options are not enabled (they aren't by default) Moodle just displays that "white screen" (because it was not able to recover from the error). Have a look at https://docs.moodle.org/38/en/Debugging#Enabling_debugging and then enable the Debugging options in Moodle. Then try to reproduce the problem again in Moodle so that details of the problem can be displayed. You should then see an error message in Moodle (or in the PHP log file) when the problem is triggered again. Share those error details here so we can try to decode it.
What version of Moodle and PHP are you using?