Bluetooth never work - OnePlus 7 Questions & Answers

Hello
I bought a OPO7 8gb/256
When arrived at home, I changed from chinese to the EU ROM.
When I tried to conect the Bluetooth, it crash and didn't work. This is the error."Setting error"
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
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"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I delete Bluetooth data, WiFi data, but still didn't work.
I update to Android 10,but the problem dont solve
Any idea?
Thanks and Regards!

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{
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{
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{
"lightbox_close": "Close",
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{
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{
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