I have updated ticket variations & options and deactivated Seats but it still makes the same error.

The purchase buttons for products using the Bookings add-on are also not working. Please note this is very urgent, as many customers are contacting us and are currently waiting for a solution. Thank you for your help with resolving this issue.

Regards

I ve been updating and working on the web and finally I have just recovered a backup from last night. Now you can access. 

Thank you very much

Hello,

I wanted to send you an update on the issue we have been experiencing, as we have now been able to isolate the problem more precisely.

We had a critical issue on our website affecting EventON ticket sales with seating maps. The main symptoms were:

• The seating map was not loading correctly.
• The ticket selection area remained blank or stuck.
• The cart was sometimes empty after selecting seats.
• EventON popups and galleries/images were also affected.
• In Safari console, we saw the following error:

TypeError: undefined is not an object (evaluating 'BUS.templ[OPT.part]')

The error pointed to:

eventon_functions.js

Specifically around the line where EventON tries to compile an internal template:

template = Handlebars.compile( BUS.templ[ OPT.part ] );

During troubleshooting, we tested several possible causes:

• WP Fastest Cache disabled
• AIOS / All In One WP Security disabled
• EventON Bookings disabled
• EventON QR Code disabled
• EventON Event Photos Plus disabled
• Avada performance optimizations disabled
• jQuery Migrate enabled
• Load jQuery in footer disabled
• Avada cache reset
• Browser cache cleared
• Backup restored from earlier the same night

After restoring the backup, the problem persisted as long as the latest version of EventON Ticket Variations & Optionswas active.

We then tested by deactivating EventON Ticket Variations & Options, and the seating map loaded correctly again.

Since this addon is essential for us — we need customers to select a seat and then choose between ticket types such as General and Reduced — we could not leave it disabled.

We then reverted EventON Ticket Variations & Options from version 1.1.16 to version 1.1.12.

After reverting to 1.1.12, everything started working again:

• Seating map loads correctly
• Seat selection works
• General / Reduced ticket variation selection works
• Tickets are added to cart correctly
• Cart and checkout work
• EventON image gallery also works again

So the issue appears to be specifically related to EventON Ticket Variations & Options 1.1.16 in combination with our current EventON / Tickets / Seats setup.

Our current working setup is:

• EventON: 5.0.9
• EventON Tickets: 2.5.6
• EventON Seats: 1.2.9
• EventON Ticket Variations & Options: 1.1.12 — working
• EventON Ticket Variations & Options: 1.1.16 — causes the issue

Could you please check whether there is a compatibility issue or bug in Ticket Variations & Options 1.1.16, especially related to seating maps and the internal BUS.templ[OPT.part] template handling?

Thank you for your help

Best regards

Also EventOn Bookings 1.4.8

Oh no! It is broken again…!

Please help me

Hello,

A quick additional update.

After reverting EventON Ticket Variations & Options from version 1.1.16 back to 1.1.12, the seating map initially worked again. However, the issue came back shortly afterwards.

We discovered that the newer version 1.1.16 had not been completely removed from the site. It had only been deactivated/uninstalled, but it was still present in the plugins area/server. At some point, WordPress appeared to switch back to the newer version, so 1.1.12 became inactive and 1.1.16 became active again.

Once we fully deleted version 1.1.16 and left only Ticket Variations & Options 1.1.12 installed and active, the seating map, ticket type selection, cart and checkout started working correctly again.

So, for our current setup:

• Ticket Variations & Options 1.1.12 works correctly
• Ticket Variations & Options 1.1.16 breaks the seating/ticket flow

There is still one remaining issue: EventON Bookings is not working correctly. The booking form is displayed, and the ticket type selection appears, but when trying to add a booking to the cart, it does not pass the booking/product correctly to WooCommerce cart.

Best regards,

Hello,

Thank you for reply. Please check this.

One important clarification: we already tried recreating the affected Escuelas Pías booking event from scratch yesterday, but the issue still remained. The booking form displayed correctly, the date/time slot could be selected, and the General/Reduced variation selector appeared, but the booking still did not pass correctly to the WooCommerce cart.

So I do not think the issue is only caused by old Avada/Fusion data stored in the original event.

Current findings:

• EventON + Tickets + Seats + Ticket Variations & Options 1.1.12 works correctly for seated concerts.
• Ticket Variations & Options 1.1.16 caused issues with the seating/ticket flow, so we fully removed it and kept only 1.1.12 active.
• EventON Bookings still does not add the booking correctly to the WooCommerce cart.
• This happens even after recreating the booking event, not only on the older event.

The issue seems more specifically related to the combination of:

• EventON Bookings
• Ticket Variations & Options
• WooCommerce cart
• possibly Avada, but not only old Avada data inside an existing event

Could you please ask development to check whether Bookings is fully compatible?

The key problem is: the booking/date/time and ticket type can be selected, but the final selection is not correctly added to the cart.

Best regards,

Hello,

We have another important update.

When EventON Bookings slots are enabled, the add-to-cart button remains stuck in a loading/processing state and never completes.

In the browser console we see this JavaScript error:

Uncaught TypeError: Cannot read properties of undefined (reading 'undefined')

The error points to:

evobo_script.js

Specifically around:

draw_blocks

So it seems that the Bookings script is trying to process/draw the selected booking blocks, but some expected internal data is undefined.

The visible behaviour is:

• Booking slots are displayed.
• The customer can select a date/time slot.
• The ticket/price block appears.
• When clicking “Add to cart”, the button keeps loading and the process does not complete.
• This makes Bookings unusable for live sales at the moment.

Because customers are already asking for available dates, we urgently need a stable workaround or fix.

For now, we may have to stop using Bookings and create normal EventON ticketed events per date, but we would appreciate your development team checking this evobo_script.js / draw_blocks error as soon as possible.

Best regards