How to fix YAML_FILE_ERROR. Download_source State: failed
Running on CodeBuild On-demand
Waiting for agent ping
Waiting for DOWNLOAD_SOURCE
Phase is DOWNLOAD_SOURCE
CODEBUILD_SRC_DIR=/codebuild/output/src2136787222/src
YAML location is /codebuild/output/src2136787222/src/buildspec.yml
DOWNLOAD_SOURCE State: FAILED
Phase context status code: YAML_FILE_ERROR Message: did not find expected key at line 15