Print service widget not workng

[MohammedKhamis]

Dear all ,

I created print service which has specific layouts but not working in WebAppBuilder & Flex now ,

Before 2 month it is working the same print service  , but now not working  , I get this error :-

print error executing print task rpc fault faultstring= unable to complete operation. fault code= 400 faultdetail=error executing tool. export web map job id ..!!

Please see in attached of image error & Print widget which I used ..

I dont know what happen ?
Please help me if you any idea to fix it ..

thanks for support

[Anonymous User]

Check the log details of your print GP service in ArcGIS server logs

[MohammedKhamis]

Thanks Avinash for your answer ..

I checked logs and I get the same error as you see on the below !!!,