'Oops!' message when enabling 'Summary' option from a calculated field

In my Shots page, I added a calculated field “Workin duration” that calculates the number of frames between two other fields: ‘Head In’ and ‘Tail out’.

The calculation is done properly. Now I want to show the ‘Summary’ on the top of the table. So when I enable this, I get this ‘Ooops!’ message:

Something just happened that we didn’t expect. It could have been a bug, or it might just be something that ShotGrid doesn’t let you do yet. We’ve provided some details below to help you troubleshoot.

Details:

{"errors":[{"id":"27fb59aa3db6340001cb03ea03ea390d","status":500,"code":100,"title":"Shotgun Server Error","source":null,"detail":"Please contact your Shotgun administrator, or contact Shotgun support at: https://support.shotgunsoftware.com. Please pass on the following information so we can trace what happened: Request: 27fb59aa3db6340001cb03ea03ea390d Event: 8ed1390df29c433ea05b332d1a5cba6e.","meta":null}]}

read failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

read failed (reason_code ): Unknown server error

{"errors":[{"id":"0edfdc60802cd06fdf1e75dace178196","status":500,"code":100,"title":"Shotgun Server Error","source":null,"detail":"Please contact your Shotgun administrator, or contact Shotgun support at: https://support.shotgunsoftware.com. Please pass on the following information so we can trace what happened: Request: 0edfdc60802cd06fdf1e75dace178196 Event: aa63a6a9f9754bfcb1bebf432456806f.","meta":null}]}

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

summarize failed (reason_code ): Unknown server error

If this looks scary or doesn’t make any sense, please [contact support](https://nbpt.shotgunstudio.com/page/%3Cdiv%3EAdditional%20Info:%3C/div%3E%3Cbr%3E%3Cdiv%3EPerson:%20Andr%C3%A9s%20Mas%20(andres.mas)%3C/div%3E%3Cdiv%3EPage:%20https://nbpt.shotgunstudio.com/page/10937%3C/div%3E%3Cdiv%3EShotGrid%20Version:%20%20v8.29.0.8618%20(build%20a5b6814)%20%3C/div%3E%3Cdiv%3EBrowser:%20Chrome%3C/div%3E%3Cdiv%3EOS:%20Windows%3C/div%3E%3Cdiv%3EUser%20Agent%20String:%20Mozilla/5.0%20(Windows%20NT%2010.0;%20Win64;%20x64)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko)%20Chrome/93.0.4577.82%20Safari/537.36%3C/div%3E%3Cdiv%3E%3C/div%3E) and someone on our support team will help you out. Thanks for your help, and sorry for the trouble.

Additional Info:

Person: Andrés Mas (andres.mas)

Page: https://nbpt.shotgunstudio.com/page/10937

ShotGrid Version: v8.29.0.8618 (build a5b6814)

Browser: Chrome

OS: Windows

User Agent String: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36

Is there anything from on the field?

Thank you!