Crash After Uploading A World

Dear Admin, i wanna ask something about my problem running a pocketmine server 3.9.0 . I want upload my world which is based on MCPE 1.12.0.28 .It seems that after uploading the world, the server automatically crash. It seems different when i use bedrock. The reason why i choose pocketmine is to install various plugin in it. So, what is the best solution for my problems?
Thanks

and how to convert it? could you help me to show how to do that?

note : i just want run a mcpe / mc windows10 edition server with some plugins in it

is there any hope for plugin in bedrock server?

so, if there is no chance, would you mine to share your world for me?
i just want to build a fantasy world with my friends. thanks

maybe my world map just corrupted, any idea to fix it? i have search for it but only found solution for java edition not PE version

Log :

2019-08-09 [15:42:50] [Server thread/EMERGENCY]: Please upload the "/aternos/server/crashdumps/Fri_Aug_9-15.42.50-+07_2019.log" file to the Crash folder and submit the link to the Bug Reporting page. Give as much info as you can.