General issues, or "An error occurred. Please try again or contact our support"
To troubleshoot the problem, please reproduce the error and take a look into the WHMCS gateway log. The gateway log records all requests and responses made by the module, so it may contain useful information about the cause of the problem.
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If a Stripe callback results in an HTTP status of 500, it's likely that the webhook secret key is incorrect. In such a case, relevant information will be logged in the module debug log. However, please note that the module debug log will also contain entries regarding manual accesses of the callback file, which should be ignored.
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