I faced this issue when I upgraded my mysql server to SQL Server 8.0 (MYSQL80).
The simplest solution to this problem is just write the below command in your MYSQL Workbench -
SET GLOBAL time_zone = '+5:30'
The value after the time-zone will be equal to GMT+/- Difference in your timezone. The above example is for India(GMT+5:30).
It will solve the issue.