We had the same problem deploying the same app (Splunk_SA_Scientific_Python_Linux_x86_64) using the deployer. Under the hood, the deployer is using HTTP to push app bundles to the Search Head Cluster. The search heads (acting as an HTTP server) are rejecting the bundle for this app because it exceeds the default setting for content length. You need to modify server.conf on the search heads to include the following setting: [httpServer]
max_content_length = 5000000000 This changes the default setting from 2147483648 (about 2 GB) to 5 GB.
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