Redmine

Hi, i just tried redmine_checklists-3_1_18-light plugin ( https://www.redmine.org/plugins/redmine_checklists ) plugin and it's broken on non-uicode checklist item add:

Internal error
An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

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Back

while it's working in a demo ( http://demo.redmineup.com/projects/agile/agile/board?query_id=4 ). I have checked nginx error log and found the next lines:

App 19293 output: ActiveRecord::StatementInvalid (Mysql2::Error: Incorrect string value: '\xD0\xA7\xD0\xB5\xD0\xBA...' for column 'subject' at row 1: INSERT INTO `checklists` (`subject`, `issue_id`, `created_at`, `updated_at`) VALUES ('Чеклист', 8810, '2021-04-09 16:54:03', '2021-04-09 16:54:03')):
App 19293 output:   app/models/issue.rb:210:in `create_or_update'
App 19293 output:   app/controllers/issues_controller.rb:563:in `block in save_issue_with_child_records'
App 19293 output:   app/controllers/issues_controller.rb:551:in `save_issue_with_child_records'
App 19293 output:   app/controllers/issues_controller.rb:168:in `update'
App 19293 output:   lib/redmine/sudo_mode.rb:63:in `sudo_mode'

I have also tried all commands like:

bundle install --without development test --no-deployment
bundle exec rake redmine:plugins NAME=redmine_checklists RAILS_ENV=production
rake redmine:plugins:migrate RAILS_ENV=production
rake db:migrate_plugins RAILS_ENV=production

Our environment:

Environment:
  Redmine version                3.4.6.stable.17477
  Ruby version                   2.2.5-p319 (2016-04-26) [x86_64-linux]
  Rails version                  4.2.8
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.9.3
  Git                            2.7.4
  Filesystem                     
Redmine plugins:
  redmine_agile                  1.6.0
  redmine_checklists             3.1.18
  redmine_custom_css             0.1.7
  redmine_issues_tree            0.0.12
  redmineup_tags                 2.0.3
  time_logger                    0.5.4

actionmailer (4.2.8)
actionpack (4.2.8)
actionpack-xml_parser (1.0.2)
actionview (4.2.8)
activejob (4.2.8)
activemodel (4.2.8)
activerecord (4.2.8)
activesupport (4.2.8)
addressable (2.5.2)
arel (6.0.4)
bigdecimal (default: 1.2.6)
builder (3.2.4, 3.2.3)
bundler (1.17.3, default: 1.16.6, 1.16.4)
bundler-unload (1.0.2)
coderay (1.1.2)
concurrent-ruby (1.1.8, 1.0.5)
crass (1.0.6, 1.0.4)
css_parser (1.6.0)
erubis (2.7.0)
executable-hooks (1.3.2)
gem-wrappers (1.4.0, 1.2.7)
globalid (0.4.2, 0.4.1)
haml (5.0.4)
haml-rails (1.0.0)
html2haml (2.2.0)
htmlentities (4.3.4)
i18n (0.7.0)
io-console (default: 0.4.3)
jquery-rails (3.1.5)
json (default: 1.8.1)
liquid (2.6.3)
loofah (2.9.0, 2.2.2)
mail (2.6.6)
mime-types (3.3.1, 3.2.2)
mime-types-data (3.2021.0225, 3.2018.0812)
mimemagic (0.3.2)
mini_portile2 (2.3.0)
minitest (5.14.4, 5.11.3)
mysql2 (0.4.10)
net-ldap (0.12.1)
nokogiri (1.8.5, 1.8.4)
passenger (5.3.4)
protected_attributes (1.1.4)
psych (default: 2.0.8)
public_suffix (3.0.3)
rack (2.0.5, 1.6.13, 1.6.10)
rack-openid (1.4.2)
rack-test (0.6.3)
rails (4.2.8)
rails-deprecated_sanitizer (1.0.4, 1.0.3)
rails-dom-testing (1.0.9)
rails-html-sanitizer (1.3.0, 1.0.4)
railties (4.2.8)
rake (13.0.3, 12.3.1, default: 10.4.2)
rbpdf (1.19.5)
rbpdf-font (1.19.1)
rdoc (default: 4.2.0)
redcarpet (3.4.0)
redmine_crm (0.0.54, 0.0.38)
request_store (1.0.5)
require_patch (0.3.3)
rmagick (2.16.0)
roadie (3.2.2)
roadie-rails (1.1.1)
ruby-openid (2.3.0)
ruby_parser (3.11.0)
rubygems-bundler (1.4.4)
rubygems-update (2.7.11)
rubyzip (1.2.2)
rvm (1.11.3.9)
sexp_processor (4.11.0)
sprockets (3.7.2)
sprockets-rails (3.2.2, 3.2.1)
temple (0.8.0)
thor (1.1.0, 0.20.0)
thread_safe (0.3.6)
tilt (2.0.8)
tzinfo (1.2.9, 1.2.5)

Any ideas how to resolve this?

Thanks in advance for any info.
Regards, Alexander.