Hi @shreya singh ,
Normally, When using a SharePoint Framework web part in Teams, the solution containing the web part must be installed in the corresponding SharePoint site.
Please make sure that āMake this solution available to all sites in the organizationā is checked if you deploy the SharePoint Framework solution at tenant wide.
If you deploy app at site scope, ensure that the solution is deployed on the SharePoint site behind of the Microsoft Teams before you can use it.
Learn more about app deployment:
https://learn.microsoft.com/en-us/sharepoint/use-app-catalog
Here are some similar issues for your reference:
https://www.spguides.com/cant-load-the-application-on-this-page-teams/
https://blog.mastykarz.nl/manifest-component-id-error-teams-tab-sharepoint-framework/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
-------------------------------------------------------------------------------------------------------------------------------------------
If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.