on ‎2019 Jan 10 8:38 AM
Cronjob suddenly stops to calculate the next activation time from 1st jan 2019. Below is the trigger information.
INSERT_UPDATE Trigger;cronjob(code)[unique=true];second;minute;hour;day;month;year;relative;active;maxAcceptableDelay
;Order Digest Email;0;0;0;-1;-1;-1;true;true;-1;
Please find attached screenshot for more information.

Request clarification before answering.
Create a trigger and use below expression. Below expression is used to trigger the cron job daily @ 1am.
0 0 01 * * ?
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I have also same issue. The cronjob is not calculating the next activation time.
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