Comment 4 for bug 1846423

User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36 OPR/60.0.3255.170

Steps to reproduce:

Thunderbird+Lightning updated; started getting this error.

Reinstalled Lightning; still got this error.

Actual results:

Export of an event with an alarm:

.
.
.
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER;VALUE=DURATION:-P1D
DESCRIPTION:Default Mozilla Description
X-LIC-ERROR;X-LIC-ERRORTYPE=PARAMETER-VALUE-PARSE-ERROR:Got a VALUE parameter with an illegal type for property: VALUE=DURATION
END:VALARM
.
.
.

Expected results:

Why is that error happening? Shouldn't I just get exported:

.
.
.
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER;VALUE=DURATION:-P1D
DESCRIPTION:Default Mozilla Description
END:VALARM
.
.
.

If I redact those errors, the export is understood by other programs...