upgrade with error

[vikozo]

after downloading and the information about rebooting in the console i got this....

Aug 25 16:21:49 lighttpd[19562]: (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
Aug 25 16:21:54 lighttpd[19562]: (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
Aug 25 16:21:59 lighttpd[19562]: (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry

[vikozo]

upgrade to 20.7 did work
update to 20.7.1
give as information

2020-08-25T16:54:21.345697+02:00 FW-03.kozo.ch lighttpd 24452 - - (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
2020-08-25T16:54:27.269803+02:00 FW-03.kozo.ch lighttpd 24452 - - (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
2020-08-25T16:54:33.282943+02:00 FW-03.kozo.ch lighttpd 24452 - - (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
2020-08-25T16:54:39.313529+02:00 FW-03.kozo.ch lighttpd 24452 - - (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
2020-08-25T16:54:45.283066+02:00 FW-03.kozo.ch lighttpd 24452 - - (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry
2020-08-25T16:54:51.237438+02:00 FW-03.kozo.ch lighttpd 24452 - - (mod_openssl.c.1975) SSL: 1 -1 error:1404C07F:SSL routines:ST_OK:bad write retry

since 6 minutes

[vikozo]

so after the update and rebooting the system are back - and i think it works fine!
but why this error???