DB error when inserting a new task

Steps to reproduce:

• Start with a fresh (not already upgraded) WebTop installation that have task service v.5.3.0
• Create a new task, fill details and save

Expected behaviour:

• New task is created

Current behaviour:

• A generic error is displayed. Under the hood the below db error is thrown.

Caused by: org.jooq.exception.DataAccessException: SQL [insert into "tasks"."tasks" ("task_id", "category_id", "revision_status", "revision_timestamp", "public_uid", "subject", "description", "start_date", "due_date", "completed_date", "importance", "is_private", "status", "completion_percentage", "reminder_date", "reminded_on", "revision_sequence", "href", "etag", "creation_timestamp") values (?, ?, ?, cast(? as timestamp), ?, ?, ?, cast(? as timestamp), cast(? as timestamp), cast(? as timestamp), ?, ?, ?, ?, cast(? as timestamp), cast(? as timestamp), ?, ?, ?, cast(? as timestamp))]; ERROR: null value in column "creation_timestamp" violates not-null constraint  Detail: Failing row contains (12, 13, N, 2019-04-19 10:57:39.196+02, 0, null, dc34c2491511eadd57d9d058c7356671@studiorocchi.net, test, null, null, null, null, 1, f, notstarted, 0, null, null, null, null).        at org.jooq.impl.Utils.translate(Utils.java:1553)        at org.jooq.impl.DefaultExecuteContext.sqlException(DefaultExecuteContext.java:609)        at org.jooq.impl.AbstractQuery.execute(AbstractQuery.java:355)        ... 63 common frames omitted Caused by: org.postgresql.util.PSQLException: ERROR: null value in column "creation_timestamp" violates not-null constraint  Detail: Failing row contains (12, 13, N, 2019-04-19 10:57:39.196+02, 0, null, dc34c2491511eadd57d9d058c7356671@studiorocchi.net, test, null, null, null, null, 1, f, notstarted, 0, null, null, null, null).