diff --git a/src/datatokens/Datatokens.ts b/src/datatokens/Datatokens.ts
index b7fe5311..79de6144 100644
--- a/src/datatokens/Datatokens.ts
+++ b/src/datatokens/Datatokens.ts
@@ -46,6 +46,7 @@ export class DataTokens {
         const estGas = await factory.methods
             .createToken(metaDataStoreURI)
             .estimateGas(function (err, estGas) {
+                if (err) console.log('Datatokens: ' + err)
                 return estGas
             })
         // Invoke createToken function of the contract
@@ -110,6 +111,7 @@ export class DataTokens {
         const estGas = await datatoken.methods
             .mint(address, amount)
             .estimateGas(function (err, estGas) {
+                if (err) console.log('Datatokens: ' + err)
                 return estGas
             })
 
diff --git a/test/TestContractHandler.ts b/test/TestContractHandler.ts
index 5f9b8eda..f6484dd9 100644
--- a/test/TestContractHandler.ts
+++ b/test/TestContractHandler.ts
@@ -41,6 +41,7 @@ export class TestContractHandler {
                 arguments: ['Template Contract', 'TEMPLATE', minter, cap, blob]
             })
             .estimateGas(function (err, estGas) {
+                if (err) console.log('DeployContracts: ' + err)
                 return estGas
             })
         // deploy the contract and get it's address
@@ -64,6 +65,7 @@ export class TestContractHandler {
                 arguments: [this.templateAddress]
             })
             .estimateGas(function (err, estGas) {
+                if (err) console.log('DeployContracts: ' + err)
                 return estGas
             })
         // deploy the contract and get it's address