Going into creative mode its likely that you won't have the ability to fly to fix this you will have to run

/ability @s mayfly true

Available commands:

WARNING: chat commands don't work in stable so you will have to use the /scriptevent command to use the commands. Use the following format: /scriptevent jm:(command)

!flyhelp: Displays a list of available commands you can use.
!flypos1: Sets the first corner of your flight zone to your current location.
!flypos2: Sets the second corner of your flight zone to your current location. The flight zone will be a rectangle defined by these two corners.
!flyzone (name): Creates a flight zone with the name you specify. The zone will be defined by the positions you set with !flypos1 and !flypos2.
!flydelete (name): Deletes the flight zone with the name you specify.
!flyshowall: Shows all existing flight zones.
!flyinterval (interval): Set the interval in ticks for checking the flight zone. The default interval is 160 ticks.

requirements

education edition toggle

If you need any more help watch this video: https://youtu.be/yx-RbqF8Ias

For support, other projects or project requests join my discord: https://discord.gg/6PFMrzS3sG

Flight Zones