Errors during running find-inactive-members.rb and no output

I try to run the ruby script find-inactive-members.rb, but I get no output at all !
When I debug the ruby script I can see several errors.
Checking the syntax is OK

I also want to know what is the right syntax for the --date parameter?

ruby --version
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-gnu]
gem env version
2.7.6

I am running on windows wsl ubuntu 18.04.4 LTS (Bionic Beaver)

When I run ruby -v -d find-inactive-members.rb -cv -o kadaster-it -d 03/12/2020
I see the following output:

ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-gnu]
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems.rb:1397 - cannot load such file -- rubygems/defaults/ruby
find-inactive-members.rb:85: warning: assigned but unused variable - email
find-inactive-members.rb:230: warning: mismatched indentations at 'end' with 'def' at 191
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().pos=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().sync=
^
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59 - cannot load such file -- octokit
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().scheme=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().host=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().port=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().path=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().scheme=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().host=
^
Exception `SyntaxError' at /usr/lib/ruby/2.5.0/forwardable/impl.rb:6 - : syntax error, unexpected end-of-input
().port=
^
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59 - cannot load such file -- idn
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:137 - cannot load such file -- idn
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59 - cannot load such file -- idn
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:137 - cannot load such file -- idn
Application client/secret?
Authentication Token? true
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59 - cannot load such file -- yajl
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:137 - cannot load such file -- yajl
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59 - cannot load such file -- multi_json
Exception `LoadError' at /usr/local/lib/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:137 - cannot load such file -- multi_json
Using Ext extension for JSON.
I, [2020-03-13T14:22:10.797362 #5942] INFO -- request: GET https://api.github.com/user
I, [2020-03-13T14:22:10.797645 #5942] INFO -- request: Accept: "application/vnd.github.v3+json"
User-Agent: "Octokit Ruby Gem 4.17.0"
Content-Type: "application/json"
Authorization: "token xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
I, [2020-03-13T14:22:11.358629 #5942] INFO -- response: Status 200
I, [2020-03-13T14:22:11.359097 #5942] INFO -- response: date: "Fri, 13 Mar 2020 13:22:09 GMT"
content-type: "application/json; charset=utf-8"
transfer-encoding: "chunked"
connection: "close"
server: "GitHub.com"
status: "200 OK"
x-ratelimit-limit: "5000"
x-ratelimit-remaining: "4994"
x-ratelimit-reset: "1584107606"
cache-control: "private, max-age=60, s-maxage=60"
vary: "Accept, Authorization, Cookie, X-GitHub-OTP, Accept-Encoding, Accept, X-Requested-With"
etag: "W/\"1ba9f7f769f4ec84d8167b574fc80a6e\""
last-modified: "Tue, 10 Mar 2020 10:52:49 GMT"
x-oauth-scopes: "admin:enterprise, admin:org, admin:public_key, delete_repo, gist, notifications, read:packages, repo, user, write:packages"
x-accepted-oauth-scopes: ""
x-github-media-type: "github.v3; format=json"
access-control-expose-headers: "ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset"
access-control-allow-origin: "*"
strict-transport-security: "max-age=31536000; includeSubdomains; preload"
x-frame-options: "deny"
x-content-type-options: "nosniff"
x-xss-protection: "1; mode=block"
referrer-policy: "origin-when-cross-origin, strict-origin-when-cross-origin"
content-security-policy: "default-src 'none'"
x-github-request-id: "3F28:6581:2D6FCE8:3575709:5E6B8900"
Scopes: admin:enterprise,admin:org,admin:public_key,delete_repo,gist,notifications,read:packages,repo,user,write:packages
I, [2020-03-13T14:22:11.373147 #5942] INFO -- request: GET https://api.github.com/rate_limit
I, [2020-03-13T14:22:11.373349 #5942] INFO -- request: Accept: "application/vnd.github.v3+json"
User-Agent: "Octokit Ruby Gem 4.17.0"
Content-Type: "application/json"
Authorization: "token xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
I, [2020-03-13T14:22:11.860253 #5942] INFO -- response: Status 200
I, [2020-03-13T14:22:11.860849 #5942] INFO -- response: date: "Fri, 13 Mar 2020 13:22:09 GMT"
content-type: "application/json; charset=utf-8"
transfer-encoding: "chunked"
connection: "close"
server: "GitHub.com"
status: "200 OK"
x-ratelimit-limit: "5000"
x-ratelimit-remaining: "4994"
x-ratelimit-reset: "1584107606"
cache-control: "no-cache"
x-oauth-scopes: "admin:enterprise, admin:org, admin:public_key, delete_repo, gist, notifications, read:packages, repo, user, write:packages"
x-accepted-oauth-scopes: ""
x-github-media-type: "github.v3; format=json"
access-control-expose-headers: "ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset"
access-control-allow-origin: "*"
strict-transport-security: "max-age=31536000; includeSubdomains; preload"
x-frame-options: "deny"
x-content-type-options: "nosniff"
x-xss-protection: "1; mode=block"
referrer-policy: "origin-when-cross-origin, strict-origin-when-cross-origin"
content-security-policy: "default-src 'none'"
vary: "Accept-Encoding, Accept, X-Requested-With"
x-github-request-id: "DD47:2AC70:192F26E:1D87A8C:5E6B8901"
Rate limit: 4994/5000