https://community.hubspot.com/t5/Data-Hub/Installing-Mailchimp-Data-Sync-app-returns-error-with-blank/m-p/436934#M95 <P>Hi,<BR />I am trying to install the Mailchimp Data Sync app through marketplace. I am able to authorize Mailchimp and then I allow Hubspot connecting in the popup window. Then I am taken back to the Hubspot window with an error message with no details. I have attached a screenshot of the error message.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="error message with no details" style="width: 999px;"><img src="https://community.hubspot.com/t5/image/serverpage/image-id/42526iB82120A8F2178C5B/image-size/large?v=v2&amp;px=999" role="button" title="Screen Shot 2021-05-12 at 10.47.05 AM.png" alt="error message with no details" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">error message with no details</span></span><BR /><BR />I reached out to the chat for help and they advised me to ask my question here. I am on the free tier. I understand that if I want Custom Field Mappings I need to upgrade to the Starter tier, but I don't know if I need that yet and would like to try the Data Sync first before I upgrade.<BR /><BR />Does anyone know why this is happening and if there is anything I can do to fix it?<BR /><BR />Thanks,</P><P>Jerry</P> Wed, 12 May 2021 17:57:35 GMT jwolver 2021-05-12T17:57:35Z https://community.hubspot.com/t5/Data-Hub/Installing-Mailchimp-Data-Sync-app-returns-error-with-blank/m-p/436934#M95 <P>Hi,<BR />I am trying to install the Mailchimp Data Sync app through marketplace. I am able to authorize Mailchimp and then I allow Hubspot connecting in the popup window. Then I am taken back to the Hubspot window with an error message with no details. I have attached a screenshot of the error message.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="error message with no details" style="width: 999px;"><img src="https://community.hubspot.com/t5/image/serverpage/image-id/42526iB82120A8F2178C5B/image-size/large?v=v2&amp;px=999" role="button" title="Screen Shot 2021-05-12 at 10.47.05 AM.png" alt="error message with no details" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">error message with no details</span></span><BR /><BR />I reached out to the chat for help and they advised me to ask my question here. I am on the free tier. I understand that if I want Custom Field Mappings I need to upgrade to the Starter tier, but I don't know if I need that yet and would like to try the Data Sync first before I upgrade.<BR /><BR />Does anyone know why this is happening and if there is anything I can do to fix it?<BR /><BR />Thanks,</P><P>Jerry</P> Wed, 12 May 2021 17:57:35 GMT https://community.hubspot.com/t5/Data-Hub/Installing-Mailchimp-Data-Sync-app-returns-error-with-blank/m-p/436934#M95 jwolver 2021-05-12T17:57:35Z https://community.hubspot.com/t5/Data-Hub/Installing-Mailchimp-Data-Sync-app-returns-error-with-blank/m-p/437325#M101 <P>For anyone interested, I found the solution myself. Another user had tried to data sync earlier and then deleted it, but Mailchimp still had the app installed on their end. So I removed the Hubspot app in Mailchimp and retried installing data sync in Hubspot and it worked.</P> Thu, 13 May 2021 17:15:45 GMT https://community.hubspot.com/t5/Data-Hub/Installing-Mailchimp-Data-Sync-app-returns-error-with-blank/m-p/437325#M101 jwolver 2021-05-13T17:15:45Z