Empty tags may appear in BookmarkList and SearchList (in code)

[kkkkan]

Issue

• close #1069

Overview (Required)

• When creating BookmarkList and SearchList tags, we now check that day is not null before creating them.

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Before	After

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Before	After

[github-actions[bot]]

Test Results

215 tests   215 :heavy_check_mark:  6m 46s :stopwatch:   11 suites      0 :zzz:   11 files        0 :x:

Results for commit e110c5d4.