Month: August 2020

FUNCTION_ERROR_INIT_FAILURE error while deploying AWS Lamba

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Today I got an error Provisioned Concurrency configuration failed to be applied. Reason: FUNCTION_ERROR_INIT_FAILURE in CloudFormation while deploying stack with Lambda And that’s all. No more details about the root cause. My SAM file configures lambda with Provisioned Concurrency. After switching off Provisioned Concurrency my stack was successfully deployed but first lambda invocation finished with exception. … Read more

IE11 ignores wildcard * for Access-Control-Allow-Headers

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Yesterday while testing my React App on Internet Explorer 11 I got SEC7123: Request header content-type was not present in the Access-Control-Allow-Headers list in F12 Developers Tools Console.It happened during OPTIONS preflight HTTPS request to AWS API Gateway with CORS enabled. CORS was enabled via MOCK Integration Request. Mandatory CORS response headers Access-Control-Allow-Headers Access-Control-Allow-Origin Access-Control-Allow-Methods … Read more