# Getting fireblocks internal error

**URL:** <https://community.fireblocks.com/t/getting-fireblocks-internal-error/1377>\
**Category:** Developer Discussion\
**Created:** [August 30, 2024, 6:50pm UTC](https://community.fireblocks.com/t/getting-fireblocks-internal-error/1377 "2024-08-30T18:50:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tan](https://avatars.discourse-cdn.com/v4/letter/t/f07891/32.png) [@tan](https://community.fireblocks.com/u/tan)\
**Post date:** [August 30, 2024, 6:50pm UTC](https://community.fireblocks.com/t/getting-fireblocks-internal-error/1377/1 "2024-08-30T18:50:03Z")

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Getting fireblocks internal error for contract call , txId - `fc6cf162-c8f1-4237-99f3-69ae1e8f4ca7`

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**Author:** ![yoji](https://avatars.discourse-cdn.com/v4/letter/y/977dab/32.png) [@yoji](https://community.fireblocks.com/u/yoji)\
**Post date:** [September 3, 2024, 7:12pm UTC](https://community.fireblocks.com/t/getting-fireblocks-internal-error/1377/2 "2024-09-03T19:12:31Z")

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Hi @tan – while simulating this contract call to estimate the necessary fees, the contract reverted the call’s execution. Unfortunately, the contract did not provide additional details on why:

```json
{'jsonrpc': '2.0', 'id': 2, 'error': {'code': -32000, 'message': 'execution reverted'}}

```

Can you please double-check your calldata?