Error in connecting to staging database after I connected to local database and created collections

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System Information

• Strapi Version: 3.6.0
• Operating System: mac os
• Database: postgres
• Node Version: 12.16.0
• NPM Version: 6.13.4
• Yarn Version:

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PFA screenshot of the error. Staging DB credentials are fine. It worked earlier and it works fine if I connect to local db.