Stm32f767 compilar error

Hi
The development platform I use is STM32F767, the IDE is MDK537, and the sample code is exported by mbed. The following error occurs when I recompile. How can I solve it?

*** Using Compiler ‘V6.18’, folder: ‘C:\Keil_v5\ARM\ARMCLANG\Bin’
Build target ‘test’
linking…
.\BUILD\test.axf: Warning: L3912W: Option ‘legacyalign’ is deprecated.
.\BUILD\test.axf: Warning: L6869W: mbed/TARGET_NUCLEO_F767ZI/TOOLCHAIN_ARM_STD/mbed_retarget.o requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6869W: mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(Serial.o) requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6869W: mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(FilePath.o) requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6869W: mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(Stream.o) requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6869W: mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(SerialBase.o) requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6869W: mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(FileHandle.o) requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6869W: mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(FileBase.o) requested the Rogue Wave Standard C++ Library which has been removed from the product. This might cause link errors because libc++ is used instead.
.\BUILD\test.axf: Warning: L6320W: Ignoring --keep command. Cannot find argument ‘os_cb_sections’.
.\BUILD\test.axf: Error: L6218E: Undefined symbol __aeabi_vec_ctor_nocookie_nodtor (referred from mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(SerialBase.o)).
.\BUILD\test.axf: Error: L6218E: Undefined symbol __aeabi_vec_dtor (referred from mbed\TARGET_NUCLEO_F767ZI\TOOLCHAIN_ARM_STD\mbed.ar(SerialBase.o)).
Not enough information to list image symbols.
Not enough information to list load addresses in the image map.
Finished: 2 information, 9 warning and 2 error messages.
“.\BUILD\test.axf” - 2 Error(s), 9 Warning(s).
Target not created.
Build Time Elapsed: 00:00:00