Issue ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY

[DRSchlaubi]

Plesk Version: Plesk 17 (onyx) Update 17
OS: Debian 8 (Whezzy)
Hey,
In so Ne Browsers i her this Error
ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY
Whrn i use plesk's Automatic let'slet' s encrypt Integration
Yurs sincerely
Michael R.

 

[Min]

Anyone know how to solve this issue?

 

[IgorG]

https://talk.plesk.com/threads/ssl-error.340520/#post-813903