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esp32-cam的程序如果一直报错怎么办啊 编译不通过 楼主求解答

C:UserslimitDesktopimageFileimageFile.ino: In function 'String sendPhoto()':
imageFile:117:86: error: unable to find string literal operator 'operator""esp32' with 'const char [72]', 'unsigned int' arguments
String head = "--RandomNerdTutorialsrnContent-Disposition: form-data; name="esp32"; filename="esp32-cam.jpg"rnContent-Type: image/jpegrnrn";
^
imageFile:117:105: error: 'cam' was not declared in this scope
String head = "--RandomNerdTutorialsrnContent-Disposition: form-data; name="esp32"; filename="esp32-cam.jpg"rnContent-Type: image/jpegrnrn";
^
exit status 1
unable to find string literal operator 'operator""esp32' with 'const char [72]', 'unsigned int' arguments