Hello,
Thank you for the report.
I have update the Stripe Connect plugin (version 1.0.5 now) to improve the error catching and also change how the output buffer is handle to avoid the addition of extra HTML after the Stripe plugin echoed its JSON content (making the return invalid for the parsing).
You can download the latest version via your HikaShop order.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.