Error to integrate the citrus payment - citrus-pay

I integrated the Citrus payment code in PHP. I received the error like
Access is denied
Bad Request:Following parameters are missing-Return URL

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google oath API with python

hello i tried launching python gmail API on my localhost but this error prevent me from authorizing and collect user tokens
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Error 400: redirect_uri_mismatch

Laravel webhook always returning '401 unauthorized' errors in production environment when receiving events from Stripe

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