Create TRIGGER to insert after the insertion of specific value
I think you have the trigger syntax wrong. Try something like (I don't fully understand the scenario so you will have to adjust the logic in the trigger):

delimiter @
create trigger resend 
after insert on t1 
for each row 
    IF NEW.status = 'ERROR' THEN     
        INSERT INTO t2 (time,sender,receiver,status,aux_id)     
        VALUES (NEW.time,NEW.sender,NEW.receiver, NEW.status, NEW.aux_id); 
    END IF @

delimiter ;