Active Campaings - Error 500 when clicking on "Subscribe for email notifications for the campaign"

[FlyWithMarie]

Which area(s) of Podkrepi.bg are affected?

Other

Describe the Bug

User gets an Internal Server Error message when clicking "Subscribe for email notifications for the campaign".

This only happens for around 50% of the active campaigns. The issue is reproducible after clearing the cache and cookies.

All active campaigns have been tested and here is a list of those that get the Error msg: 1) https://podkrepi.bg/en/campaigns/zaedno-da-izgradim-vila-autistika 2) https://podkrepi.bg/en/campaigns/breast-cancer-rotary-club 3) https://podkrepi.bg/en/campaigns/da-vuzrodim-chitalishnata-dejnost-i-zaedno-da-postroim-edno-novo-moderno-chitalishe-trotoara-2020 4) https://podkrepi.bg/en/campaigns/da-sbudnem-mechtata-na-valeriya-da-vleze-v-top-5-na-evropa-v-tenisa 5) https://podkrepi.bg/en/campaigns/myastoto-kudeto-starite-zanayati-se-sreshat-s-novite-tehnologii-rabotilnica-ela 6) https://podkrepi.bg/en/campaigns/champions-canoeing-bdin-77 7) https://podkrepi.bg/en/campaigns/uchilishe-za-rabota-v-pomosh-na-mladezhi-lisheni-ot-roditelska-grizha 8) https://podkrepi.bg/en/campaigns/krizisen-centur-za-postradali-ot-nasilie-gr-pernik-shans-za-nov-zhivot 9) https://podkrepi.bg/en/campaigns/konna-terapiya-za-detsa

https://github.com/podkrepi-bg/frontend/assets/158328628/975a76bb-2f4f-4418-908c-90054f931563

To Reproduce

1) Open https://podkrepi.bg/ 2) Login with a valid username and password 3) Click "Campaigns" and select "All Campaigns" 4) Select any of the listed in the "Describe the Bug" section campaigns (ex: "„Вила АутистикА” - ..") 5) Click "Subscribe for email notifications for the campaign" 6) Click "On the profile one" button in the pop-up window

Expected Behavior

A success message should appear confirming that the user subscribed successfully for email notifications for the chosen campaign.

Which browser are you using? (if relevant)

Chrome: Version 123.0.6312.124 and Firefox: Version 124.0

[ani-kalpachka]

Closing the ticket since it seems to be fixed as part of #1788

[sashko9807]

Still awaiting the fix to be merged.

[Tuscann]

Please do not close this bug before merge and deployed.