--- title: "How to deal with \"Unexpected error: Cannot convert undefined or null to object\"" description: "How to deal with \"Unexpected error: Cannot convert undefined or null to object\"" --- [Skip to content](https://knowledge.hublead.io/how-to-deal-with-unexpected-error-cannot-convert-undefined-or-null-to-object#main-content) [![hublead logo](https://knowledge.hublead.io/hs-fs/hubfs/hublead%20logo.png?width=100&height=21&name=hublead%20logo.png)](https://www.hublead.io/) - [Home](https://knowledge.hublead.io/) - Getting Started Show submenu for Getting Started - [How HubSpot and Hublead connect](https://knowledge.hublead.io/how-hubspot-and-hublead-connect-how-it-works) - [Import contacts & companies](https://knowledge.hublead.io/en/import-contacts-companies) - [Sync Conversations](https://knowledge.hublead.io/en/import-linkedin-conversations-to-hubspot) - [LinkedIn Invitations](https://knowledge.hublead.io/en/import-linkedin-invitations) - The Core Workflows Show submenu for The Core Workflows - 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How can we help you? - There are no suggestions because the search field is empty. 1. [Hublead Help Center](https://knowledge.hublead.io/?hsLang=en) 2. [Troubleshooting & known issues](https://knowledge.hublead.io/troubleshooting-known-issues?hsLang=en) October 28, 2025 # How to deal with "Unexpected error: Cannot convert undefined or null to object" ## The issue is rare and usually temporary, related to HubSpot rate limits or to missing LinkedIn data. The error message "Unexpected error: Cannot convert undefined or null to object" may show up in some cases when clicking **“Create Contact”** or **“Link Contact.”** ![](https://knowledge.hublead.io/hs-fs/hubfs/image-png-2.png?width=670&height=278&name=image-png-2.png) ### **What this error means** - If HubSpot is temporarily unavailable or you're hitting **API rate limits,** HubSpot can reject requests for a few minutes. - Also, this can happen when Hublead tries to send contact data to HubSpot, but one of the required properties (LinkedIn URL, Job Title, and Country) is **empty or misconfigured**. ### **How to fix this error** **Case 1: HubSpot rate limit is exceeded** 1. Wait **10-15 minutes** before retrying. 2. Refresh the LinkedIn page. 3. Click 'Create Contact' or 'Link Contact' again. The contact should sync normally after the cooldown. **Case 2: Missing or invalid LinkedIn properties** 1. Make sure the following properties haven't been deleted: LinkedIn URL, Job Title, and Country. To do so, visit [this page](https://app-eu1.hubspot.com/property-settings/)(or go to Settings \> Properties in HubSpot). 2. If they haven't, ensure they're configured as **'Single-line text'**. 3. Refresh the LinkedIn page. 4. Try clicking 'Create Contact' or 'Link Contact' again. ![](https://knowledge.hublead.io/hs-fs/hubfs/image-png-3.png?width=670&height=168&name=image-png-3.png) **![](https://knowledge.hublead.io/hs-fs/hubfs/image-png-4.png?width=670&height=164&name=image-png-4.png)** **![](https://knowledge.hublead.io/hs-fs/hubfs/image-png-Oct-28-2025-04-45-46-3450-PM.png?width=670&height=135&name=image-png-Oct-28-2025-04-45-46-3450-PM.png)** **Case 3: Still not working** 1. Export the **console logs** (follow the instructions outlined on [this video](https://share.descript.com/view/UXo8sy1zHQG)). 2. Send the logs to [support@hublead.io](mailto:support@hublead.io), including the LinkedIn profile URL and timestamp of the error. ### **How to prevent this error** - Always keep the Hublead Chrome extension up-to-date. - Ensure your HubSpot connection is active in [Hublead Settings](https://app.hublead.io/settings/general). - Avoid mass-creating contacts too quickly to prevent hitting rate limits. - [Getting started](https://knowledge.hublead.io/getting-started?hsLang=en) - [The Core Workflows](https://knowledge.hublead.io/the-core-workflows?hsLang=en#main-content) - [Data Enrichment](https://knowledge.hublead.io/the-core-workflows?hsLang=en#data-enrichment) - [Chrome Extension](https://knowledge.hublead.io/the-core-workflows?hsLang=en#chrome-extension) - [HubSpot](https://knowledge.hublead.io/the-core-workflows?hsLang=en#hubspot) - [Dashboard & Settings](https://knowledge.hublead.io/dashboard-settings?hsLang=en#main-content) - [Reporting](https://knowledge.hublead.io/dashboard-settings?hsLang=en#reporting) - [Billing](https://knowledge.hublead.io/dashboard-settings?hsLang=en#billing) - [Seats / Team / workspace administration](https://knowledge.hublead.io/dashboard-settings?hsLang=en#seats-team-workspace-administration) - [Troubleshooting & known issues](https://knowledge.hublead.io/troubleshooting-known-issues?hsLang=en) - [General](https://knowledge.hublead.io/general?hsLang=en#main-content) - [Billing](https://knowledge.hublead.io/general?hsLang=en#billing) [![hublead logo-1](https://knowledge.hublead.io/hs-fs/hubfs/hublead%20logo-1.png?width=400&height=86&name=hublead%20logo-1.png "hublead logo-1")](https://www.hublead.io/) hublead.io Help Center Copyright © 2025, Hublead