can someone help with this please? i got the same message a second time
From the image you seem it looks that you are mining fine. You are submitting deadlines, so that is good. The failed info line is just saying that your miner did not get a conformation for whom (i.e. that URL you have in in you miner.conf under get mining info) you set to inform you who solved a certain block and also the network size and possibly some other info.
As far as I understand this does not affect your mining
ok thanks for this info. can someone else validate this too?

You're mining - that you're getting confirmed Deadlines show's that.
The Failed Info line just indicates that a request for the status of mining timed out, probably wallet overload/too busy.
But you are mining and earning.
H.