Datamanager cannot be applied as datasource, Indexof error because of missing url

Question

I have a problem for 2 days now, which I only noticed now, that its not about my backend of frontend, but the installed packages.

i cannot apply a datamanger as a datasource for a Grid. it keeps throwing an error that it cannot read the indexof of the datamanagers' datasources' url. even with an online sample that runs online fine, i cant get it to work.

this does not run in my application, throws the same error:

https://stackblitz.com/edit/react-befaby-dhqelb?file=sample-base.js,index.css

Error:

Uncaught TypeError: Cannot read properties of undefined (reading 'indexOf')

at UrlAdaptor.processQuery (adaptors.js:625:35)

at e.executeLocal (ej2-data.min.js:10:74366)

at ej2-data.min.js:10:75536

Pavithra Subramaniyam · Answer

Hi Mehdi Nabhani,We have checked the shared sample which is working fine at
our end. Please refer to the below screenshot.From your query we suspect that some duplicate package might
be installed in “@syncfusion” folder of node_modules while updating. This may
occur due to version mismatch of packages. So, we suggest you delete the
“@syncfusion” folder and “package.lock.json” file from your application and
follow the steps provided in the below documentation for update the packages. Documentation: https://ej2.syncfusion.com/react/documentation/common/how-to/update-npm-packageIf you are still facing the issue, please share the below
details which will be helpful for us to validate further.
 Share the Syncfusion
     package version.
 Full Grid code example
     with DataManager code in which the issue is occurred.
 Replication procedure of
     the issue.
 Share an issue
     reproducible sample if possible.
Regards,Pavithra S

Mehdi Nabhani · Answer

Thank you, I found the problem and solved it with the help of the documentation you provided.

Swetha Srikumar · Answer

We are glad to hear that your problem has been solved.