Having trouble

[shoio]

Hello there!
I'm running the lib on a Mac.
First I had a problem with WiFiUDP.h which I had to change the name to WiFiUdp.h.
After fixing that I ran the example file and had a lot of errors that I don`t know how to fix:

In file included from /Users/shoio/Documents/Arduino/tello_example/tello_example.ino:1:
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::up(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:98:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
98 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::down(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:106:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
106 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::left(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:114:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
114 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::right(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:122:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
122 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::forward(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:130:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
130 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::back(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:138:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
138 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::rotate_clockwise(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:146:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
146 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::rotate_anticlockwise(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:154:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
154 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::setSpeed(int)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:190:10: error: return-statement with a value, in function returning 'void' [-fpermissive]
190 | return false;
| ^~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:193:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
193 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::changeWifi(std::string, std::string)':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:200:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
200 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::getSpeed()':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:207:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
207 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::getTime()':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:215:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
215 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::getHeight()':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:222:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
222 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::getAcceleration()':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:229:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
229 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h: In member function 'void Tello::getWifiSnr()':
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:236:15: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
236 | sendMessage(command);
| ^~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
/Users/shoio/Library/Arduino15/libraries/tello/Tello.h:25:27: note: initializing argument 1 of 'void Tello::sendMessage(String)'
25 | void sendMessage(String command) {
| ~~~~~~~^~~~~~~

exit status 1

Compilation error: exit status 1