Here you are deploying code to production from sandbox,

and By default it runs all related test methods for code coverage. You need to resolve all specified errors in Log.

DeleteRWClient.DelRecs() 

Type: Class Line:79 Column:1

Failure Message: "System.ListException: List index out of bounds: 0", Failure Stack Trace: "Class.DeleteRWClient.DelRecs: line 79, column 1"

To resolve above error, make sure your list contains some records.

Example :

List<Lead> lstLead =[Select Id from Lead];

if you are accessing 5th record like  lstLead[4] , you can check index first to avoid exception

if(lstLead.size() >= 5 )

{

// then access lstLead[4]

}

ManageAppointments.CheckAll()

Type: Class  Line:71 Column: 5 

Failure Message: "System.DmlException: Update failed. First exception on row 0 with id 0062000000Knx2YAAR; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, You must add products to this opportunity before saving.: []", Failure Stack Trace: "Class.ManageAppointments.AddNew: line 715, column 1 Class.ManageAppointments.CheckAll: lin...

Here is some custom validation , create proper test data

TriggerCodeCoverage.UPDATE_TOTALAPPS_FIXED_REMAINING()

Type: Class  Line:70 Column:1 

Failure Message: "System.DmlException: Update failed. First exception on row 0 with id 0062000000Knx2YAAR; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, You must add products to this opportunity before saving.: []", Failure Stack Trace: "Class.TriggerCodeCoverage.UPDATE_TOTALAPPS_FIXED_

REMAINING: line 70, column 1"       

*** Here is also some custom validation, make sure you are preparing correct test data which will pass above validation rules

Hope this will help you.

Thanks,

Bala