Cant' create calendars

[protogonfs]

• Modoboa: 1.13.1 and 1.14
• installer used: Yes
• Webserver: Nginx
• OS: Ubuntu 18.04.2 LTS

Steps to reproduce

With a fresh installation done trough the installer, try to create a new calendar for a user.

Current behavior

When I click on 'Create', nothing seems to happen. Error 500 came up in /var/log/uwsgi/app/modoboa_instance.log. Using a Let's Encrypt certificate for SSL.
Error:
[...] [pid: 2667|app: 1|req: 54/81] <Client_IP_removed> () {58 vars in 1162 bytes} [Wed Jul 10 17:38:09 2019] POST /api/v1/user-calendars/ => generated 882 bytes in 412 msecs (HTTP/1.1 500) 5 headers in 181 bytes (1 switches on core 0)

Expected behavior

When clicking on 'Create', Modoboa will proceed to create the calendar and no errors show up in logs.

[dirkjf]

I can confirm I also have this issue on a fresh install on Ubuntu 18.04 LTS with Nginx.

[tonioo]

@dirkjf Are you using a valid certificate?

[dirkjf]

@tonioo, yes I use a valid certificate.

[abonanni]

Same problem with a self signed certificate.
Is it possible to add a parameter like "verify_ssl = false" ?

[abonanni]

I had the Certificate Authority in the system.
curl and wget are working welle
but python generate error "Caused by SSLError(SSLError("bad handshake: Error([('SSL routines', 'tls_process_server_certificate', 'certificate verify failed')],)",),)"

[tonioo]

@abonanni are you sure your certificate chain is complete?

[PetroGolovnya]

In modoboa 1.15.0 and modoboa-radicale 1.4.3 i have same issue.
With 500 error.
Certificate from letsencrypt.
I can create calendar, bit not can to create events in calendar.

{50 vars in 939 bytes} [Tue Jun 2 04:35:41 2020] GET /calendars/ => generated 5699 bytes in 295 msecs (HTTP/1.1 200) 5 headers in 163 bytes (1 switches on core 0)
{48 vars in 832 bytes} [Tue Jun 2 04:35:41 2020] GET /jsi18n/ => generated 3223 bytes in 71 msecs (HTTP/1.1 200) 5 headers in 171 bytes (1 switches on core 0)
{52 vars in 1019 bytes} [Tue Jun 2 04:35:42 2020] GET /api/v1/shared-calendars/ => generated 2 bytes in 74 msecs (HTTP/1.1 200) 6 headers in 193 bytes (1 switches on core 0)
{52 vars in 1015 bytes} [Tue Jun 2 04:35:42 2020] GET /api/v1/user-calendars/ => generated 264 bytes in 81 msecs (HTTP/1.1 200) 6 headers in 195 bytes (1 switches on core 0)
{50 vars in 1151 bytes} [Tue Jun 2 04:35:42 2020] GET /api/v1/user-calendars/10/events/?start=2020-05-31T00%3A00%3A00%2B07%3A00&end=2020-06-07T00%3A00%3A00%2B07%3A00&_=1591065343477 => generated 19091 bytes in 273 msecs (HTTP/1.1 500) 5 headers in 184 bytes (1 switches on core 0)
{50 vars in 954 bytes} [Tue Jun 2 04:35:55 2020] GET /core/top_notifications/check/ => generated 67 bytes in 108 msecs (HTTP/1.1 200) 5 headers in 153 bytes (1 switches on core 0)
{58 vars in 1183 bytes} [Tue Jun 2 04:35:57 2020] POST /api/v1/user-calendars/10/events/ => generated 19741 bytes in 162 msecs (HTTP/1.1 500) 5 headers in 184 bytes (1 switches on core 0)
{50 vars in 958 bytes} [Tue Jun 2 04:36:12 2020] GET /core/top_notifications/check/ => generated 2 bytes in 87 msecs (HTTP/1.1 200) 5 headers in 152 bytes (1 switches on core 0)

modoboa-radicale and radicale must be connected by SSL?