diff --git a/ui/src/integrations/ethereum/lib/fleek-erc721.ts b/ui/src/integrations/ethereum/lib/fleek-erc721.ts
index 220cac7..905381e 100644
--- a/ui/src/integrations/ethereum/lib/fleek-erc721.ts
+++ b/ui/src/integrations/ethereum/lib/fleek-erc721.ts
@@ -1,13 +1,27 @@
+import {
+  ErrorDescription as InterfaceErrorDescription,
+  Result as InterfaceResult,
+} from '@ethersproject/abi/lib/interface';
+import { BytesLike } from 'ethers';
 import { Ethereum } from '../ethereum';
 
+enum CollectionRoles {
+  Owner,
+  Verifier,
+}
+
+enum TokenRoles {
+  Controller,
+}
+
 export const FleekERC721 = {
+  contract: Ethereum.getContract('FleekERC721'),
+
   async mint(
     params: FleekERC721.MintParams,
     provider: Ethereum.Providers
   ): Promise<void> {
-    const contract = Ethereum.getContract('FleekERC721', provider);
-
-    const response = await contract.mint(
+    const response = await this.contract.connect(provider).mint(
       params.owner,
       params.name,
       params.description.replaceAll(/\n/g, '\\n'), //replace break lines with \\n so it doesn't break the json,
@@ -39,6 +53,83 @@ export const FleekERC721 = {
     // TODO: fetch last token id
     return 7;
   },
+
+  parseError(error: BytesLike): FleekERC721.TransactionError {
+    try {
+      if (!error) throw new Error('Empty error');
+
+      const description = this.contract.interface.parseError(error);
+      const result = this.contract.interface.decodeErrorResult(
+        description.signature,
+        error
+      );
+
+      let message: string;
+
+      switch (description.signature) {
+        case 'ContractIsNotPausable()':
+          message = 'This contract is not pausable';
+          break;
+
+        case 'ContractIsNotPaused()':
+          message = 'This contract is not paused';
+          break;
+
+        case 'ContractIsPaused()':
+          message = 'This contract is paused';
+          break;
+
+        case 'MustBeTokenOwner(uint256)':
+          message = `You must be the token #${result.tokenId} owner`;
+          break;
+
+        case 'MustHaveAtLeastOneOwner()':
+          message = 'You must have at least one owner';
+          break;
+
+        case 'MustHaveCollectionRole(uint8)':
+          message = `You must have a collection role "${
+            CollectionRoles[result.role]
+          }" to mint`;
+          break;
+
+        case 'MustHaveTokenRole(uint256,uint8)':
+          message = `You must have a token role "${
+            TokenRoles[result.role]
+          }" on token #${result.tokenId}`;
+          break;
+
+        case 'PausableIsSetTo(bool)':
+          message = `Pausable is set to "${result.isPausable}"`;
+          break;
+
+        case 'RoleAlreadySet()':
+          message = `Role is already set`;
+          break;
+
+        case 'ThereIsNoTokenMinted()':
+          message = `There is no token minted`;
+          break;
+
+        default:
+          message = 'Unknown error';
+      }
+
+      return {
+        message,
+        description,
+        result,
+        isIdentified: true,
+      };
+    } catch {
+      return {
+        message: 'Unknown error',
+        description: null,
+        result: null,
+        isIdentified: false,
+      };
+    }
+  },
 };
 
 export namespace FleekERC721 {
@@ -61,4 +152,11 @@ export namespace FleekERC721 {
       }
     ];
   };
+
+  export type TransactionError = {
+    message: string;
+    description: InterfaceErrorDescription | null;
+    result: InterfaceResult | null;
+    isIdentified: boolean;
+  };
 }
diff --git a/ui/src/views/mint/mint.context.tsx b/ui/src/views/mint/mint.context.tsx
index 07c57b8..7cd4ff5 100644
--- a/ui/src/views/mint/mint.context.tsx
+++ b/ui/src/views/mint/mint.context.tsx
@@ -1,9 +1,10 @@
-import { ComboboxItem, DropdownItem } from '@/components';
-import { GithubState } from '@/store';
-import { EthereumHooks } from '@/integrations';
-import { createContext } from '@/utils';
 import { useState } from 'react';
 
+import { ComboboxItem, DropdownItem } from '@/components';
+import { Ethereum, EthereumHooks } from '@/integrations';
+import { GithubState } from '@/store';
+import { createContext } from '@/utils';
+
 export type MintContext = {
   selectedUserOrg: ComboboxItem;
   repositoryName: GithubState.Repository;
diff --git a/ui/src/views/mint/nft-card/nft-card.tsx b/ui/src/views/mint/nft-card/nft-card.tsx
index 058f739..7533c58 100644
--- a/ui/src/views/mint/nft-card/nft-card.tsx
+++ b/ui/src/views/mint/nft-card/nft-card.tsx
@@ -9,7 +9,7 @@ type NftCardProps = {
   message: string;
   buttonText: string;
   leftIconButton?: React.ReactNode;
-  onClick: () => void;
+  onClick?: () => void;
   isLoading: boolean;
 };
 
@@ -53,7 +53,7 @@ export const NftCard: React.FC<NftCardProps> = ({
             onClick={onClick}
             leftIcon={leftIconButton}
             isLoading={isLoading}
-            isDisabled={isLoading}
+            isDisabled={isLoading || !onClick}
           >
             {buttonText}
           </Button>
diff --git a/ui/src/views/mint/preview-step/mint-preview.tsx b/ui/src/views/mint/preview-step/mint-preview.tsx
index 14d50ea..13e8a75 100644
--- a/ui/src/views/mint/preview-step/mint-preview.tsx
+++ b/ui/src/views/mint/preview-step/mint-preview.tsx
@@ -1,5 +1,6 @@
 import { Icon, IconButton, Stepper } from '@/components';
 import { useTransactionCost } from '@/hooks';
+import { FleekERC721 } from '@/integrations';
 import { Mint } from '@/views/mint/mint.context';
 import { ethers } from 'ethers';
 import { useMemo } from 'react';
@@ -8,7 +9,7 @@ import { NftCard } from '../nft-card';
 export const MintPreview = () => {
   const { prevStep } = Stepper.useContext();
   const {
-    prepare: { status: prepareStatus, data: prepareData },
+    prepare: { status: prepareStatus, data: prepareData, error: prepareError },
     write: { status: writeStatus, write },
     transaction: { status: transactionStatus },
   } = Mint.useTransactionContext();
@@ -24,6 +25,18 @@ export const MintPreview = () => {
     if (isCostLoading || prepareStatus === 'loading')
       return 'Calculating cost...';
 
+    // TODO: better UI for prepare errors
+    if (prepareError) {
+      const parsedError = FleekERC721.parseError(
+        (prepareError as any).error?.data.data
+      );
+      if (parsedError.isIdentified) {
+        return parsedError.message;
+      }
+
+      return 'An error occurred while preparing the transaction';
+    }
+
     const formattedCost = ethers.utils.formatEther(cost).slice(0, 9);
     return `Minting this NFA will cost ${formattedCost} ${currency}.`;
   }, [prepareData, isCostLoading, prepareStatus]);
@@ -59,7 +72,7 @@ export const MintPreview = () => {
       }
       message={message}
       buttonText="Mint NFA"
-      onClick={write!}
+      onClick={write}
       isLoading={isLoading}
     />
   );