usps first class mail parcel returns 0

[shahzebjaved23]

I have a spree app, using the spree_active_shipping gem. It uses following for shipping methods,

• usps first class mail parcel,
• usps priority mail
• ups ground
• ups three day select
• ups second day air
• usps priority express
• usps next day air saver

all the methods calculated prices are correct, except the usps first class mail parcel service, which returns 0, I have selected the zone based in country, and selected united stated

Please let me know how to debug this issue, and how to log the api response that usps sends back. What can be the possible reasons for this ?

[cgcmart]

app/models/spree/calculator/shipping/usps/base.rb needs to be updated.
Since the max_weight is determined at the calculator level, base.rb needs to compute max_weight(package) and make it a parameter that other calculators can process.

[shahzebjaved23]

@99cm can you kindly specify exactly what updations need to be made in app/models/spree/calculator/shipping/usps/base.rb