[O2B-1056] bookkeeping error page

[hattinf]

I have a JIRA ticket

• branch and/or PR name(s) include(s) JIRA ID
• issue has "Fix version" assigned
• issue "Status" is set to "In review"
• PR labels are selected

Notable changes for users:
-redirects to error page when page parameter is unknown

Notable changes for developers:

Changes made to the database:

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 25 lines in your changes missing coverage. Please review.

Project coverage is 44.00%. Comparing base (86f5f39) to head (8755271).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/public/Model.js	0.00%	12 Missing ⚠️
lib/public/views/Error/ErrorModel.js	0.00%	10 Missing ⚠️
lib/public/views/Error/index.js	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1820      +/-   ##
==========================================
- Coverage   44.06%   44.00%   -0.07%     
==========================================
  Files         889      891       +2     
  Lines       15869    15892      +23     
  Branches     2993     2997       +4     
==========================================
  Hits         6993     6993              
- Misses       8876     8899      +23     

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