[SOLVED] "aborting due to insecure configuration" while configuring TLS on Rust rocket server

I had a rust rocket server running on http and wanted to use SSL for https. So I looked up rocket's docs and they say that mentioning features = ["secrets","tls"] and updating the toml file should work. So I used lets encrypt to make cert and key, and then updated the Rocket.toml file to

[global]
address = "0.0.0.0"

[global.tls]
certs = "/etc/letsencrypt/live/<my-site-name>/fullchain.pem"
key = "/etc/letsencrypt/live/<my-site-name>/privkey.pem"

Now,I tried to run it using cargo run --release. Initially I got error permissions, so I gave 777 to /etc/letsencrypt/live/<my-site-name>/. Then, I get this error...

Error: secrets enabled in non-debug without `secret_key`
thread 'main' panicked at /usr/local/cargo/registry/src/index.crates.io-6f17d22bba15001f/rocket-0.5.0/src/error.rs:279:9:
aborting due to insecure configuration
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Here's the full back-trace

thread 'main' panicked at /home/<usrname>/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rocket-0.5.0/src/error.rs:279:9:
aborting due to insecure configuration
stack backtrace:
   0:     0x55f4d1e7f8ac - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x55f4d1e7f8ac - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x55f4d1e7f8ac - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x55f4d1e7f8ac - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x55f4d1ea9f60 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
   5:     0x55f4d1ea9f60 - core::fmt::write::h3a39390d8560d9c9
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
   6:     0x55f4d1e7cedf - std::io::Write::write_fmt::h5fc9997dfe05f882
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
   7:     0x55f4d1e7f694 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x55f4d1e7f694 - std::sys_common::backtrace::print::h23a2d212c6fff936
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x55f4d1e80c97 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
  10:     0x55f4d1e809ff - std::panicking::default_hook::h6038f2eba384e475
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:292:9
  11:     0x55f4d1e81118 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:779:13
  12:     0x55f4d1e80ffe - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:657:13
  13:     0x55f4d1e7fd76 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
  14:     0x55f4d1e80d62 - rust_begin_unwind
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
  15:     0x55f4d1b324a5 - core::panicking::panic_fmt::hbf0e066aabfa482c
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
  16:     0x55f4d1b21408 - <rocket::error::Error as core::ops::drop::Drop>::drop::panic_cold_display::he5dc1057b424aedc
  17:     0x55f4d1c6ef2f - <rocket::error::Error as core::ops::drop::Drop>::drop::hbdf92a95047de52a
  18:     0x55f4d1beda4c - profile::main::h1e6b180125a7113b
  19:     0x55f4d1c44f53 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha2e2be00eabaeced
  20:     0x55f4d1bdd679 - std::rt::lang_start::{{closure}}::h1df2f767fdd4a955
  21:     0x55f4d1e78a27 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd95060ecd5e1ca24
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:284:13
  22:     0x55f4d1e78a27 - std::panicking::try::do_call::h6e8cf51db32a6e4b
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
  23:     0x55f4d1e78a27 - std::panicking::try::h3a52eefe24fe3c29
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
  24:     0x55f4d1e78a27 - std::panic::catch_unwind::h24c28c23c02c3841
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
  25:     0x55f4d1e78a27 - std::rt::lang_start_internal::{{closure}}::h705d3c9cbc06ef47
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/rt.rs:148:48
  26:     0x55f4d1e78a27 - std::panicking::try::do_call::ha21f52ba13158470
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
  27:     0x55f4d1e78a27 - std::panicking::try::h5581346bf6aeb1f8
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
  28:     0x55f4d1e78a27 - std::panic::catch_unwind::h7919645a6b72e25b
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
  29:     0x55f4d1e78a27 - std::rt::lang_start_internal::h12de51168669836e
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/rt.rs:148:20
  30:     0x55f4d1bdd66e - std::rt::lang_start::hea076afcced76d46
  31:     0x7eff75abed90 - __libc_start_call_main
                               at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
  32:     0x7eff75abee40 - __libc_start_main_impl
                               at ./csu/../csu/libc-start.c:392:3
  33:     0x55f4d1b32c45 - _start
  34:                0x0 - <unknown>

Looks like I'm missing some important step? Trying SSL for the first time (looked at a few tutorials but they are not for rust rocket). Any help appreciated!

My setup

Rust Rocket server running on docker on RaspPi.
Port 80 forwarded from my router, 443 is also open for testing https
namecheap domain with A of domain and www.domain to my IP using ddns on Pi.

Tried on docker in Raspberry and Windows local, and I am getting same result on both.

Also tried specifying port=443