Hello,
I process some tests, I'm unable to see where the trouble come from but I noticed some interesting points.
- I'm unable to have the same issue on my localhost website test.
- The white screen appear when a product is add to your module cart, when this module is unpublished no white screen.
- I install the previous version of paypal express (a version very used by lots of our customers) and have the same results.
- I'm unable to have a error message displaying that concern HikaShop or Paypal Express plugin.
Conclusions :
Something interact with paypal express plugin (my versions or previous regardless), a plugin, a custom code ? I don't know!
To discover it, I need your Ftp acces to go more far in my tests.
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Awaiting news from you.
Regards,