Change Details

**Steps: ** 1. On `eswiki beta` go to https://es.wikipedia.beta.wmflabs.org/wiki/Especial:CommunityConfiguration/GrowthSuggestedEdits Presently, fields such as "The maximum number of "Add an image to an unillustrated article" suggested tasks a newcomer can complete daily" do not have any saved values. 2. Enter a number in one of those fields and save - it's saved successfully. 3. Now, delete the previously entered value and hit **Save changes** - the error message will be displayed: {F49881397} **Expected behavior**: - null values should be allowed - or numerical fields should have fall-back default values - a user warning should provide a user with clearer info of what went wrong and how the failure can be corrected

**Steps: ** 1. Set https://es.wikipedia.beta.wmflabs.org/wiki/MediaWiki:GrowthExperimentsSuggestedEdits.json to `{}` (to reset the state of the form). 1. Go to https://es.wikipedia.beta.wmflabs.org/wiki/Especial:CommunityConfiguration/GrowthSuggestedEdits Fields such as "The maximum number of "Add an image to an unillustrated article" suggested tasks a newcomer can complete daily" do not have any saved values. 2. Change a different field and save the form. The save will be successful. 3. Set "The maximum number of "Add an image to an unillustrated article" suggested tasks a newcomer can complete daily" to an arbitrary delete and save the form. The save will be successful. 3. Now, delete the previously entered number and hit **Save changes** - the error message will be displayed: {F49881397} Screencast that demonstrates this bug is at https://drive.google.com/file/d/1uYKoCddO2aWxTdxHYJOnJ69OkyQvJB2S/view?usp=sharing. **Expected behavior**: - null values should be allowed - or numerical fields should have fall-back default values - a user warning should provide a user with clearer info of what went wrong and how the failure can be corrected

**Steps: ** 1. On `eswiki beta` go toSet https://es.wikipedia.beta.wmflabs.org/wiki/Especial:CommunityConfiguration/GrowthSuggestedEditsMediaWiki:GrowthExperimentsSuggestedEdits.json to `{}` (to reset the state of the form). Presently, fields such as "The maximum number of "Add an image to an unillustrated article" suggested tasks a newcomer can complete daily" do not have any saved values. 21. Enter a number in one of those fields and save - it's saved successfully. 3. Now, delete the previously entered value and hit **Save changes** - the error message will be displayed:Go to https://es.wikipedia.beta.wmflabs.org/wiki/Especial:CommunityConfiguration/GrowthSuggestedEdits Fields such as "The maximum number of "Add an image to an unillustrated article" suggested tasks a newcomer can complete daily" do not have any saved values. 2. Change a different field and save the form. The save will be successful. 3. Set "The maximum number of "Add an image to an unillustrated article" suggested tasks a newcomer can complete daily" to an arbitrary delete and save the form. The save will be successful. 3. Now, delete the previously entered number and hit **Save changes** - the error message will be displayed: {F49881397} Screencast that demonstrates this bug is at https://drive.google.com/file/d/1uYKoCddO2aWxTdxHYJOnJ69OkyQvJB2S/view?usp=sharing. **Expected behavior**: - null values should be allowed - or numerical fields should have fall-back default values - a user warning should provide a user with clearer info of what went wrong and how the failure can be corrected