Fix resource not found exception with null checks

[maskaravivek]

Title (required)

Fixes B part of #1545.

Description (required)

Fixes part of #1545

Fix resource not found exception with null checks

Tests performed (required)

Wasn't able to reproduce the bug but null checks should prevent the crashes.

[codecov-io]

Codecov Report

Merging #1628 into 2.8-release will decrease coverage by <.01%.
The diff coverage is 0%.

@@              Coverage Diff               @@
##           2.8-release   #1628      +/-   ##
==============================================
- Coverage         3.87%   3.87%   -0.01%     
==============================================
  Files              150     150              
  Lines             7567    7571       +4     
  Branches           708     710       +2     
==============================================
  Hits               293     293              
- Misses            7257    7261       +4     
  Partials            17      17

Impacted Files	Coverage Δ
...w/commons/contributions/ContributionsActivity.java	0% <0%> (ø)	⬆️

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[misaochan]

Thanks @maskaravivek !