14408 - Corrections to serializers and notices they throw

[niden]

Hello!

• Type: bug fix
• Link to issue: [BUG]: fatal error when using the model cache #14408

In raising this pull request, I confirm the following:

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR
• I have updated the relevant CHANGELOG
• I have created a PR for the documentation about this change

Changed the code to trap exceptions/notices for serializers as well as fopen for stream.

Thanks

[niden]

cc @sergeyklay @ruudboon

[codecov]

Codecov Report

Merging #14431 into 4.0.x will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            4.0.x   #14431      +/-   ##
==========================================
+ Coverage   67.65%   67.68%   +0.02%     
==========================================
  Files         478      478              
  Lines      110956   110969      +13     
==========================================
+ Hits        75066    75106      +40     
+ Misses      35890    35863      -27

[ruudboon]

Looks good. thnx