(in promise) TypeError: Cannot read properties of undefined (reading 'call')

Question

When i try to call CALL Function of thirdweb it shows error "(in promise) TypeError: Cannot read properties of undefined (reading 'call')". Everthing is correct but.

const getCampaigns = async () => {
        const campaigns = await contract.call('getCampaigns');

        const parsedCampaings = campaigns.map((campaign, i) => ({
            owner: campaign.owner,
            title: campaign.title,
            description: campaign.description,
            target: ethers.utils.formatEther(campaign.target.toString()),
            deadline: campaign.deadline.toNumber(),
            amountCollected: ethers.utils.formatEther(campaign.amountCollected.toString()),
            image: campaign.image,
            pId: i
        }));
        console.log(parsedCampaings);
    }