Redmine

Hei guys,
I am seeking help for an issue appeared out of blue a few days ago.
I am mentioning two issues im currently facing with redmine server.
I have limited experience so, please pardon me if you find someting silly.

The "issues tab" under "Projects" is giving "404 The page you were trying to access doesn't exist or has been removed.".
But i can access issues from "Activity" from Home page.

Here is the production log
I, [2024-01-27T13:24:03.066643 #59998] INFO -- : [2db514bc-e944-479e-983c-2f7e4ee266a2] Processing by AccountController#login as HTML
I, [2024-01-27T13:24:03.066701 #59998] INFO -- : [2db514bc-e944-479e-983c-2f7e4ee266a2] Parameters: {"back_url"=>"https://srvr-rdmn.sensom.net/"}
I, [2024-01-27T13:24:03.068257 #59998] INFO -- : [2db514bc-e944-479e-983c-2f7e4ee266a2] Current user: anonymous
I, [2024-01-27T13:24:03.070629 #59998] INFO -- : [2db514bc-e944-479e-983c-2f7e4ee266a2] Rendered account/login.html.erb within layouts/base (Duration: 1.7ms | Allocations: 677)
I, [2024-01-27T13:24:03.077981 #59998] INFO -- : [2db514bc-e944-479e-983c-2f7e4ee266a2] Rendered layout layouts/base.html.erb (Duration: 9.0ms | Allocations: 4644)
I, [2024-01-27T13:24:03.078353 #59998] INFO -- : [2db514bc-e944-479e-983c-2f7e4ee266a2] Completed 200 OK in 11ms (Views: 9.1ms | ActiveRecord: 0.9ms | Allocations: 5409)
I, [2024-01-27T13:24:03.237581 #59998] INFO -- : [714436f6-382c-4d16-be3c-5da7d8aa2f66] Started GET "/issues" for 10.23.240.53 at 2024-01-27 13:24:03 +0100
I, [2024-01-27T13:24:03.238327 #59998] INFO -- : [714436f6-382c-4d16-be3c-5da7d8aa2f66] Processing by IssuesController#index as HTML
I, [2024-01-27T13:24:03.242321 #59998] INFO -- : [714436f6-382c-4d16-be3c-5da7d8aa2f66] Current user: redsoul (id=18)
I, [2024-01-27T13:24:03.247670 #59998] INFO -- : [714436f6-382c-4d16-be3c-5da7d8aa2f66] Rendered common/error.html.erb within layouts/base (Duration: 0.1ms | Allocations: 55)
I, [2024-01-27T13:24:03.272096 #59998] INFO -- : [714436f6-382c-4d16-be3c-5da7d8aa2f66] Rendered layout layouts/base.html.erb (Duration: 24.6ms | Allocations: 12674)
I, [2024-01-27T13:24:03.272309 #59998] INFO -- : [714436f6-382c-4d16-be3c-5da7d8aa2f66] Completed 404 Not Found in 34ms (Views: 22.3ms | ActiveRecord: 5.1ms | Allocations: 15045)

The server was updated 6 monts ago and working fine with Plugins except for one plugin i.e. Redmine UP Agile Plugin which is giving "500 Internal Server Error". We currently not using this plugin but its one of our most wanted Plugin.
But i tried available solutions in Internet except migrating the DB Dump to new server then the "404 Error appeared"

I, [2023-09-29T14:10:40.708375 #1174] INFO -- : [f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] Started GET "/projects/visorkot/issues" for 10.23.9.29 at 2023-09-29 14:10:40 +0200
I, [2023-09-29T14:10:40.709674 #1174] INFO -- : [f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] Processing by IssuesController#index as HTML
I, [2023-09-29T14:10:40.709733 #1174] INFO -- : [f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] Parameters: {"project_id"=>"visorkot"}
I, [2023-09-29T14:10:40.719703 #1174] INFO -- : [f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] Current user: redsoul (id=158)
I, [2023-09-29T14:10:40.752393 #1174] INFO -- : [f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] Completed 500 Internal Server Error in 43ms (ActiveRecord: 12.2ms | Allocations: 11536)
F, [2023-09-29T14:10:40.752984 #1174] FATAL -- : [f5c2955c-fae6-4efb-8e4f-a54e5de01c3b]
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] Psych::DisallowedClass (Tried to load unspecified class: ActionController::Parameters):
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b]
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] app/models/setting.rb:111:in `value'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] app/models/setting.rb:125:in `[]'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] app/models/setting.rb:320:in `plugin_redmine_agile'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] plugins/redmine_agile/lib/redmine_agile.rb:71:in `color_base'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] plugins/redmine_agile/lib/redmine_agile/patches/issue_query_patch.rb:28:in `issues_with_agile'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] app/controllers/issues_controller.rb:55:in `block (2 levels) in index'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] app/controllers/issues_controller.rb:51:in `index'
[f5c2955c-fae6-4efb-8e4f-a54e5de01c3b] lib/redmine/sudo_mode.rb:61:in `sudo_mode'

Here is the

Information
Redmine 5.0.4.stable

Default administrator account changed
Attachments directory writable
Plugin assets directory writable (./public/plugin_assets)
All database migrations have been run
MiniMagick available (optional)
ImageMagick convert available (optional)
ImageMagick PDF support available (optional)
System info: Linux SRVR-GO-RDMN 6.1.0-15-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.66-1 (2023-12-09) x86_64 GNU/Linux
Uptime: 3 days
Redmine Plugin Kit: 1.0.4

Environment:
Redmine version 5.0.4.stable
Ruby version 3.1.2-p20 (2022-04-12) [x86_64-linux-gnu]
Rails version 6.1.7.4
Environment production
Database adapter Mysql2
Mailer queue ActiveJob::QueueAdapters::AsyncAdapter
Mailer delivery smtp
Redmine settings:
Redmine theme Default
SCM:
Subversion 1.14.2
Git 2.39.2
Filesystem
Redmine plugins:
additional_tags 1.0.7
additionals 3.0.8
redmine_drawio 1.4.4
redmine_x_assets 2.1.6
redmine_x_gantt 2.1.5
redmine_x_issue_list 1.0.8
redmine_x_project_templates 1.1.2
redmine_x_resources 2.1.8
redmine_x_statistics 1.1.4

Please help to trouble shooting by sharing your suggestions.
Thanks in advance :D