Convert Text to RichText: stuck with component in string interpolation invalid error

[Ansh-Team]

Can we access your project?

• I give permission for members of the FlutterFlow team to access and test my project for the sole purpose of investigating this issue.

Current Behavior

• project errors: "A component in the string interpolation is invalid"

• click on the error

• there is no invalid/red indicated text, checking all menus

• remove all text span parts, so it's an empty richText element

• → error still there

• re-create component by dragging new richText element & copy-pasting all values

• → error is gone

Expected Behavior

Upon replacing all components/translations, the error should go away.
I should not have to re-create the richText element to fix an invisible issue.

Steps to Reproduce

1. create project
2. add 2 languges to project
3. create text element
4. add combined text; 1 part language, 1 part any variable (eg DB or datatype value)
5. convert text to rich text element
6. → all looks good
7. add 3rd language to project
8. → 2 errors on the rich text element
9. fix the only visible missing translation issue
10. → no more red indication; variable and all translations are set
11. → still stuck with invalid component error

Reproducible from Blank-

[ x] The steps to reproduce above start from a blank project.

Bug Report Code (Required)###

IT4oz/Hqx89grsMA15DUbPkxgSQsQ1wkU4E40spBZz0aIuPpDJl/PM/6PxJWXsDiSn9MfWKmp14DpK3rkeOSLe0rGEmVbNV+yYdQeg3KeF6nMp+TF7q7OEF8BedWfR3F16W7vRRCVLJvSkYC3VyIAOuibArbK5T0DkQwSq/LZO4=

Visual documentation###

video example shows full process how to reproduce, all steps

important note

• we also tried to delete each span part separately inside the richtText, and re-add it, but that doesn't fix it
• even a richtext element with 0 text spans, still has the same error!
• video example shows removing all textspan parts from the richText element, but still same string interpolation invalid error stays

Environment

- FlutterFlow version: FlutterFlow v6.4.61+ released December 2, 2025. Flutter version is 3.32.4
- Platform: FlutterFlow app & web dev version
- Browser name and version: Firefox latest, Chrome latest
- Operating system and version affected: Windows 11

Additional Information

I'm trying to support another language in the app and am getting slowed down a lot by having to re-create 30+ richText elements by now, with still having many to go.

I also had this issue with rich texts in the past already, where it would error invalid - without adding another language. However it happened rarely and I didn't know how to reproduce it.
It's very well possible the cause is not adding the language, but it just gets more obvious/reproducible when you do so.

I believe if you duplicate/copy paste the element you converted before adding the language, then all copied versions have the same problem.

related issue: #6868

[Juansarmi]

Hello!I’m sorry to hear that you’re experiencing this issue. I’ve followed your steps exactly, but I haven’t been able to reproduce the error on my end.

Based on the information provided in this issue, it appears that you are using an older version of FlutterFlow. Please try updating your app to the latest version and then attempt to reproduce the issue again.

Have you also tried reproducing the error using the FlutterFlow web version?

If the issue persists after trying the steps above, it would be very helpful if you could share a video showing the step-by-step process you’re following when encountering the error.

Best regards

[Ansh-Team]

@Juansarmi have you seen the videos i have provided in the description? it shows the full process to reproduce, all steps.
it does not matter if you are using software or not. as explained in description, it also happens on web version.
here is again full steps in web, same new project created just for this issue. you are welcome to check the project and edit it to try it out :)

adding the language always adds 2 errors for the converted richtext element. while only 1 can be resolved by actually adding language text. pls ensure you are adding a variable as 1 of the combined text parts. for example a page parameter value as in the video. feel free to provide a video what you tried so i can maybe improve the instructions.

[Juansarmi]

Thank you for sharing the new video. It’s now much clearer how you’re reaching this error.

I’ll be forwarding this issue to our engineering team for further review, and I’ll let you know as soon as I have any updates.

In the meantime, I was able to confirm that the issue does not occur if you create the Rich Text widget directly, instead of converting it from a Text widget using the “Replace Widget” option.

Best regards