There is no validation for Amount field on Apply charges page after selecting fees of type: '% Loan Amount+Interest' and '% Interest'.
1. Login to Mifos.
2. Go to 'Clients & Accounts' tab.
3. Search for any client with Loan account.
4. On 'Loan details' page, click on 'Apply charges' link.
5. Select fee of type: '% Loan Amount+Interest' or '% Interest'.
6. Leave Amount field empty and click Submit button.
Validation message appears.
Page with stack trace appears. See attached screenshot.