In the confirmation element (Send to Approvel) in the flow, mail was sent to both the task window and the user's e-mail address in each confirmation. By activating this feature, no mail will be sent.
The query could not be written to the Decription field in the Send Approval element in the flow. The use of sql has been activated in the relevant field.
In case of problems with any object in the use of objects in the flow, then the objects created afterward were not working. By checking the status of each object separately, the situation that the problem experienced in any object affects other objects has been eliminated.
Even when no changes are made to the form, the save button flashes green when clicking Flow. Direct run doesn't work before the form had to be saved. This issue has been fixed.