Pickup In store 4.2 can not configure error

When we click on configure we get this error:

DataTables warning: table id=pickup-points-grid - Ajax error. For more information about this error, please see http://datatables.net/tn/7

Also it looks like resource names (shown in buttons are not defined).

I would re-install plug in but can not find download files

Please help.

There maybe an internal server error. Please check log message first.

This shows:
  Upozorenje  Resource string (plugins.pickup.pickupinstore.addnew) is not found. Language ID = 3  11/06/2019 16:05:52  
  Upozorenje  Resource string (plugins.pickup.pickupinstore.fields.store) is not found. Language ID = 3  11/06/2019 16:05:52  
  Upozorenje  Resource string (plugins.pickup.pickupinstore.fields.pickupfee) is not found. Language ID = 3  11/06/2019 16:05:52  
  Upozorenje  Resource string (plugins.pickup.pickupinstore.fields.openinghours) is not found. Language ID = 3  11/06/2019 16:05:52  
  Upozorenje  Resource string (plugins.pickup.pickupinstore.fields.name) is not found. Language ID = 3  11/06/2019 16:05:52  
  Upozorenje  Resource string (admin.configuration.plugins.discardchanges.progress) is not found. Language ID = 3  11/06/2019 16:05:38  
  Upozorenje  Resource string (admin.configuration.plugins.applychanges.progress) is not found. Language ID = 3  11/06/2019 16:05:38  
  Upozorenje  Resource string (admin.configuration.plugins.discardchanges) is not found. Language ID = 3  11/06/2019 16:05:38  
  Upozorenje  Resource string (admin.configuration.plugins.applychanges) is not found. Language ID = 3


Shall we add those strings manually?

sssorano wrote:

It would be better to reinstall rather than trying to "add those strings manually", in case something else is wrong too.

You don't need to "find download files"  - it's already in your /Plugins folder.   In the Admin > Local Plugins,  Uninstall the plugin, Apply, and then the site will restart.  Then go back to plugin list and Install and Apply.

Hi sssorano,
These are not errors, but warnings. Filter logs by Log level (select Error).

Make sure you checked logs just after getting that error on Pickup in store list page.