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-rw-r--r--packages/web3-wrapper/src/web3_wrapper.ts3
1 files changed, 3 insertions, 0 deletions
diff --git a/packages/web3-wrapper/src/web3_wrapper.ts b/packages/web3-wrapper/src/web3_wrapper.ts
index ace6a2d61..ed2d0a119 100644
--- a/packages/web3-wrapper/src/web3_wrapper.ts
+++ b/packages/web3-wrapper/src/web3_wrapper.ts
@@ -315,6 +315,9 @@ export class Web3Wrapper {
*/
public async callAsync(callData: CallData, defaultBlock?: BlockParam): Promise<string> {
const rawCallResult = await promisify<string>(this._web3.eth.call)(callData, defaultBlock);
+ if (rawCallResult === '0x') {
+ throw new Error('Contract call failed (returned null)');
+ }
return rawCallResult;
}
/**