Hi Moises,
Thanks for posting back and sorry for my late reply.
I assume you copy and paste the linked chart via Paste Special> Paste link> Excel Worksheet Object, and "Planificacion Financiera" is a SharePoint site name.
If not, please point it out and let us know.
If so, to troubleshoot the situation, please try the following steps, then check again.
- Please run Excel, click File> Open, select SharePoint, go to the related location and open the Excel workbook.
- Please copy and paste the linked chart in the PowerPoint presentation, then click File> Info> Edit Links to Files to check the path. Check if it is a local path or a SharePoint URL.
If it is a local path, please point it out and let us know.
If it is a SharePoint URL, I would like to know how you opened the Excel workbook before. Did you go to the SharePoint folder in File Explorer to open the Excel workbook?
If so, based on my searches, it is likely due to a hidden OneDrive setting "File collaboration - Use Office applications to sync Office files that I open" as shown below. The option was previously visible in the OneDrive settings dialog, but in the latest OneDrive client, it is hidden and enabled by default. So, to troubleshoot the situation, please try the following steps to check the value of this hidden OneDrive setting.

Method 1:
Please try the steps in Garon's reply in this thread. Check whether the current value of "CoAuthEnabledUserSetting" is false or not. If it is false, please set it to "true". After that, please quit and restart OneDrive, then check again.
Method 2:
Please press Win + R, type regedit and open Registry Editor. Check if you can see the following registry key: [HKCU\SOFTWARE\Policies\Microsoft\OneDrive] "EnableAllOcsiClients". If you can find it, and its value is 0, please change the value to 1, for example:
[HKCU\SOFTWARE\Policies\Microsoft\OneDrive] "EnableAllOcsiClients"=dword:00000001
After that, please quit and restart OneDrive, then check again.
When you have any updates, please feel free and come back to share them with us.
Sincerely,
George | Microsoft Community Moderator