[BUG] chain_get_era_info_by_switch_block RPC fails to execute

[devendran-m]

This bug is reported by MAKE;

They reported that they are facing with a new one on RPC call chain_get_era_info_by_switch_block , in Devnet testing (with Condor RC6):

rpc call failed, details: key: Query failed to execute, data: "request for era info has failed: the provided global state query failed to execute"

Error:

$ curl 44.197.182.12:7777/rpc -sd '{"jsonrpc":"2.0","method":"chain_get_era_info_by_switch_block"
,"id":0,"params":{"block_identifier":{"Height":22736}}}' -H "Content-Type: application/json"
{"jsonrpc":"2.0","id":0,"error":{"code":-32004,"message":"Query failed to execute","data":"request for era info has failed: the provided global state query failed to execute"}}

[sacherjj]

Also sometimes getting this:

curl 44.197.182.12:7777/rpc -sd '{"jsonrpc":"2.0","method":"chain_get_era_info_by_switch_block","id":0,"params":{"block_identifier"1{"Height":3343163}}}' -H "Content-Type: application/json"
{"jsonrpc":"2.0","id":null,"error":{"code":-32700,"message":"Parse error","data":"expected `:` at line 1 column 99"}}

[sacherjj]

This could be either node or sidecar.

[sacherjj]

Running on sidecar based on commit 6ed71c527976a030dffeccea3273cb7293cd9889
casper-node on release-2.0.0rc6

[devendran-m]

@zajko will triage and update.