Error while using mosql mongodb to postgres translator - ruby

Question

I am using MOSQL to create a live database replica of a mongodb database in postgres. I install all the requirements.
My mosql query i ran in terminal:
mosql -c coll.yaml --sql postgres://postgres:postgres#localhost:5432/test --mongo mongodb://localhost:27017/
My mongodb collection:
{
"_id" : ObjectId("562dd2ef5bd6681ad0f63868"),
"name" : "manish",
"score" : 23,
"class" : "Engg"
}
...
My coll.yaml:
Flipkart:
temp:
:columns:
- name: TEXT
- score: INTEGER
- class: TEXT
:meta:
:table: temp
:extra_props: true
Error
/usr/lib/ruby/1.9.1/psych.rb:203:in parse': (coll.yaml): found character that cannot start any token while scanning for the next token at line 2 column 1 (Psych::SyntaxError)
from /usr/lib/ruby/1.9.1/psych.rb:203:inparse_stream'
from /usr/lib/ruby/1.9.1/psych.rb:151:in parse'
from /usr/lib/ruby/1.9.1/psych.rb:127:inload'
from /usr/lib/ruby/1.9.1/psych.rb:297:in block in load_file'
from /usr/lib/ruby/1.9.1/psych.rb:297:inopen'
from /usr/lib/ruby/1.9.1/psych.rb:297:in load_file'
from /var/lib/gems/1.9.1/gems/mosql-0.4.3/lib/mosql/cli.rb:140:inload_collections'
from /var/lib/gems/1.9.1/gems/mosql-0.4.3/lib/mosql/cli.rb:152:in run'
from /var/lib/gems/1.9.1/gems/mosql-0.4.3/lib/mosql/cli.rb:16:inrun'
from /var/lib/gems/1.9.1/gems/mosql-0.4.3/bin/mosql:5:in <top (required)>'
from /usr/local/bin/mosql:23:inload'
from /usr/local/bin/mosql:23:in `'
How to remove the error?