Error SSL, dont work

[jothoma1]

Hi, i have a strange error i cant get the handler to work.... Here is my log file, it complains about SSL but it's not a self signed certificate and i have tried to add all CA intermediate but still no luck. I think it's something else.

{"timestamp":"2017-01-30T21:55:55.467577+0100","level":"info","message":"handler output","handler":{"type":"pipe","command":"handler-slack.rb -j slack","severities":["critical","unknown"],"name":"slack"},"output":["/opt/sensu/embedded/lib/ruby/2.3.0/net/http.rb:933:in connect_nonblock': SSL_connect returned=1 errno=0 state=error: certificate verify failed (OpenSSL::SSL::SSLError)\n\tfrom /opt/sensu/embedded/lib/ruby/2.3.0/net/http.rb:933:in connect'\n\tfrom /opt/sensu/embedded/lib/ruby/2.3.0/net/http.rb:863:in do_start'\n\tfrom /opt/sensu/embedded/lib/ruby/2.3.0/net/http.rb:852:in start'\n\tfrom /opt/sensu/embedded/lib/ruby/2.3.0/net/http.rb:1398:in request'\n\tfrom /opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-slack-1.0.0/bin/handler-slack.rb:140:in post_data'\n\tfrom /opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-slack-1.0.0/bin/handler-slack.rb:92:in handle'\n\tfrom /opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.4.2/lib/sensu-handler.rb:81:in block in class:Handler'\nwarning: event filtering in sensu-plugin is deprecated, see http://bit.ly/sensu-plugin\nwarning: occurrence filtering in sensu-plugin is deprecated, see http://bit.ly/sensu-plugin\n"]}

I have try to add an environment variable with export SSL_CERT_FILE but still no luck. I dont understand why it dont work. Can someone help me ? Thanks in advance