Error: create: failed to create: Secret "sh.helm.release.v1.rapidpro.v1" is invalid: data: Too long: must have at most 1048576 bytes

[oleksiidn]

When I tried to install helm charts it failed with next error:
Release "rapidpro" does not exist. Installing it now.
Error: create: failed to create: Secret "sh.helm.release.v1.rapidpro.v1" is invalid: data: Too long: must have at most 1048576 bytes

In my case the root cause was very unexpected: the chart folder contained the xxxx.tgz file (the archive file left there by mistake) and until it was deleted, I got this error all the time. The error message isn't even close to the real root cause. More details.