Checkmk Werk 11259: Fix host "Save & Test" action showing "API error" for all tests

ID: 11259 Title: Fix host "Save & Test" action showing "API error" for all tests Component: WATO Level: 1 Class: Bug fix Version: 1.7.0i1 The host diagnostic page was initially showing the message "API Error: The text None is not a valid integer number." after adding or editing a host and confirming the dialog with the "Save & Test" button. This regression was introduced by werk #11254 in version 1.6.0p15. You could workaround this issue by clicking the "Test" button on the page showing that error. It will start the tests in the correct way.