[CAL-863] No available users found error on confirming booking for an open slot

[ChipWolf]

Found a bug? Please fill out the sections below. 👍

Issue Summary

I have not replicated this personally, but I have had different users report this error on more than occasion.

When confirming an individual booking [not a team page], some users have seen this error: "Could not book the meeting. No available users found."

_CAL-863

[PeerRich]

by any chance, is your event-type link called "book"? thats an ongoing issue we are fixing right now

[ChipWolf]

by any chance, is your event-type link called "book"? thats an ongoing issue we are fixing right now

It isn't, it's called bau

[PeerRich]

weird...

we're putting in a lot of work right now in the booking page, maybe a team member knows more. you said you cant reproduce this. any idea what this could cause?

[stephane-klein]

Same error for me, with 2 different contacts (without account in cal.com).

[PeerRich]

upgraded to urgent. we need to get rid of this error message all-together and get to the bottom of this

[milospuac]

@ChipWolf Is this slot made available through a date override?

[stephane-klein]

date override?

@milospuac yes for me 👍

[chadamski]

This is also impacting users trying to book through my cal.com link. The slots are not available through date overrides, just normal, open slots.

[stephane-klein]

I think that the "No available users found." error message come from this line.

[stephane-klein]

Why this line

const { busy: bufferedBusyTimes, workingHours } = await getUserAvailability(

don't get dateOverrides variable? 🤔

[PeerRich]

@emrysal

[ChipWolf]

@ChipWolf Is this slot made available through a date override?

Yes

[stephane-klein]

@ChipWolf @PeerRich Question: do you have a Merge Request in work in progres to share about this is issue ?

[PeerRich]

not yet, i believe different issues cause the same (bad) error message of "No available users found"

[stephane-klein]

Some news about this issue?

I'm stuck, waiting for this bug to be fixed and I don't know if it's better if I try to fix this bug myself or if I should go to https://calendly.com/ or https://savvycal.com 🤔

[PeerRich]

hey, we are actively working on this, it seems to be some sort of user error because it doenst show up for each user.

I understand this is super annoying which is why it has an urgent flag

[PeerRich]

lemme also give it a bounty

/bounty 1000

[algora-pbc]

💎 $1,000.00 bounty created by PeerRich
👉 To claim this bounty, submit a pull request that includes the text /claim #6622 somewhere in its body
📝 To receive payouts, join Algora and complete the relevant onboarding steps
💵 Payment arrives in your account 2-5 days after the bounty is rewarded
💯 You keep 100% of the bounty award
🙏 Thank you for contributing to calcom/cal.com!

[PeerRich]

@stephane-klein I cannot reproduce this on your link

[wamoyo]

Same issue for me.

URL: https://cal.com/innovationbound/book?type=211681&month=2023-04&date=2023-04-03T09%3A00%3A00-04%3A00&slug=45-min-meeting&count=

Had to have a potential client tell me : (
Not good : (

[elmerohueso]

@zomars When should this fix go live on the website, so I can tell my users/clients?

[zomars]

@elmerohueso Monday we will tag a release

[elmerohueso]

Great!

[algora-pbc]

@roae cal wants to reward your solution. Please sign up on Algora, link your Github account and connect with Stripe on your dashboard.

[ShaneMaglangit]

Glad that this is getting resolve.

I would suggest that we re-evaluate having Dayjs as the dependency. It has been getting a lot of complaints due to how buggy it is when dealing with timezones (due to daylight savings) and how unresponsive the maintainer is. Last commit was 3 weeks ago. Tons of projects already moved away from it.

Its practically unmaintained: https://github.com/iamkun/dayjs/pulse/monthly

[algora-pbc]

roae has completed their onboarding. You can now complete the payment on your org dashboard

[elmerohueso]

@roae It looks likes the problem still exists for March 12th (DST starts at 2AM, local time, on March 12th). It does, however, appear to be working after that.

[PeerRich]

@ShaneMaglangit whats a good alternative?

@emrysal you experience a lot of issues with dayjs. is it time switching?

[ShaneMaglangit]

@ShaneMaglangit whats a good alternative?

@emrysal you experience a lot of issues with dayjs. is it time switching?

I have been seeing positive comments about Luxon, which is maintained by the people behind Moment.js. I believe that its something worth considering as an alternative.

[emrysal]

The primary issue with dayjs is the ease in which you can make errors:

E.g. dayjs("2023-01-02T22:00:00Z").utc() is NOT the same as dayjs.utc("2023-01-02T22:00:00Z") - in this example the resulting time can be miles off, both will be in UTC mode but one is adjusted to the local time and the other is not.

Every dayjs line has to be carefully considered and taking into account the three timezones we are dealing with - organizer, system and booker time.

[tomml]

I am facing the same error message, but maybe a different scenario here.
See my bookings: https://cal.com/mobile-massage-rgb/25
There, the appointment for 3:55pm (timezone is europe/amsterdam as I am from germany) should be bookable, but if I understand correctly it does not fit my availability. The availability time slot can only be set by 15min slots. Mine is set to 1pm till 4:15pm. The appointment time by the other hand can be an exact 1min slot. 25minutes in my case. I tried to make my availability till 4:30pm, but then there appears another appointment starting at 4:20pm, which also does not fit the availability schedule.
With this time settings always the last appointment slot is not bookable by my clients facing the error message OP posted.
How to resolve that issue?

[ShaneMaglangit]

I am facing the same error message, but maybe a different scenario here. See my bookings: https://cal.com/mobile-massage-rgb/25 There, the appointment for 3:55pm (timezone is europe/amsterdam as I am from germany) should be bookable, but if I understand correctly it does not fit my availability. The availability time slot can only be set by 15min slots. Mine is set to 1pm till 4:15pm. The appointment time by the other hand can be an exact 1min slot. 25minutes in my case. I tried to make my availability till 4:30pm, but then there appears another appointment starting at 4:20pm, which also does not fit the availability schedule. With this time settings always the last appointment slot is not bookable by my clients facing the error message OP posted. How to resolve that issue?

Yup, this is a slightly different issue. I can create a quick PR to fix this as I have already identified where this bug is found before. Just have to check if there any existing PR for this.

Edit: Seems to be a known issue assigned to a member of team #7167

[algora-pbc]

🎉🎈 @roae has been awarded $1,000! 🎈🎊

[PeerRich]

we ended up hiring @roae ❤️

[roae]

Fixed on #7792

[ShaneMaglangit]

@PeerRich still randomly encountering this error btw, atleast with a better error message now.

[PeerRich]

yeah the amount has really decreased. we're investigating the last couple times