{ RPCError: Bad Cast:Invalid cast from object_type to string

[pgarciagon]

Seting up tests..
username: cervantes
{ operations: [ [ ‘transfer_to_vesting’, [Object] ] ] }
Broadcasting tx...
{ RPCError: Bad Cast:Invalid cast from object_type to string
at new RPCError (/Users/pgarcgo/code/hf23_tests/node_modules/steem/lib/api/transports/http.js:43:106)
at /Users/pgarcgo/code/hf23_tests/node_modules/steem/lib/api/transports/http.js:93:13
at process._tickCallback (internal/process/next_tick.js:68:7)
cause:
{ RPCError: Bad Cast:Invalid cast from object_type to string
at new RPCError (/Users/pgarcgo/code/hf23_tests/node_modules/steem/lib/api/transports/http.js:43:106)
at /Users/pgarcgo/code/hf23_tests/node_modules/steem/lib/api/transports/http.js:93:13
at process._tickCallback (internal/process/next_tick.js:68:7)
name: ‘RPCError’,
code: -32000,
data:
{ code: 7,
name: ‘bad_cast_exception’,
message: ‘Bad Cast’,
stack: [Array] } },
isOperational: true,
code: -32000,
data:
{ code: 7,
name: ‘bad_cast_exception’,
message: ‘Bad Cast’,
stack: [ [Object] ] } }
(node:10438) UnhandledPromiseRejectionWarning: AssertionError [ERR_ASSERTION]: The expression evaluated to a falsy value:
assert(result.error)
at test (/Users/pgarcgo/code/hf23_tests/setup_tests.js:51:9)
at process._tickCallback (internal/process/next_tick.js:68:7)
(node:10438) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:10438) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
you seen it before?
(on the testnet, of course)
-> this is the code