module:TextUtils has a non escaped non ASCII character in non ASCII-8BIT script (RegexpError)

[exatest1]

C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/tmail-1.2.7.1/lib/tmail/utils.rb:117:in <module:TextUtils>': /.../n has a non escaped non ASCII character in non ASCII-8BIT script (RegexpError) from C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/tmail-1.2.7.1/lib/tmail/utils.rb:110:in module:TMail'
from C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/tmail-1.2.7.1/lib/tmail/utils.rb:53:in <top (required)>' from <internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:86:in require'
from internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb:86:in require' from C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/tmail-1.2.7.1/lib/tmail/interface.rb:36:in <top (required)>'
from internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb:86:in require' from <internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:86:in require'
from C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/tmail-1.2.7.1/lib/tmail/mail.rb:34:in <top (required)>' from <internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:86:in require'
from internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb:86:in require' from C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/tmail-1.2.7.1/lib/tmail.rb:2:in <top (required)>'
from internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb:160:in require' from <internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:160:in rescue in require'
from internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb:40:in require' from t2mail.rb:2:in

'
internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb:86:in require': cannot load such file -- tmail (LoadError) from <internal:C:/Ruby32-x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:86:in require'
from t2mail.rb:2:in `'