encode decode issue

[galihteja]

In file included from sketch\gBase64 (2).cpp:1:0:
C:\Users\Galih Teja\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.2\cores\esp8266/Base64.h:34:12: error: 'String' does not name a type
static String encode(const uint8_t * data, size_t length, bool doNewLines = true);
^
C:\Users\Galih Teja\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.2\cores\esp8266/Base64.h:35:12: error: 'String' does not name a type
static String inline encode(const String& text, bool doNewLines = true)
^
In file included from sketch\gBase64.cpp:1:0:
C:\Users\Galih Teja\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.2\cores\esp8266/Base64.h:34:12: error: 'String' does not name a type
static String encode(const uint8_t * data, size_t length, bool doNewLines = true);
^
C:\Users\Galih Teja\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.2\cores\esp8266/Base64.h:35:12: error: 'String' does not name a type
static String inline encode(const String& text, bool doNewLines = true)
^
E:\TEJA\LoRa\Gateway\ESP-1ch-Gateway-v5.0--OLD-master\ESP-sc-gway_txRx.ino: In function 'int sendPacket(uint8_t*, uint8_t)':
_txRx:135:65: error: 'base64_dec_len' was not declared in this scope
LoraDown.payLength = base64_dec_len((char *) data, strlen(data));// Length of the Payload data
^
_txRx:136:61: error: 'base64_decode' was not declared in this scope
base64_decode((char *) payLoad, (char ) data, strlen(data)); // Fill payload w decoded message
^
E:\TEJA\LoRa\Gateway\ESP-1ch-Gateway-v5.0--OLD-master\ESP-sc-gway_txRx.ino: In function 'int buildPacket(uint32_t, uint8_t, LoraUp, bool)':
_txRx:443:47: error: 'base64_enc_len' was not declared in this scope
int encodedLen = base64_enc_len(messageLength); // max 341
^
_txRx:452:52: error: 'base64_encode' was not declared in this scope
base64_encode(b64, (char *) message, messageLength);// max 341
^
Multiple libraries were found for "WiFiUdp.h"
Used: C:\Users\Galih Teja\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.2\libraries\ESP8266WiFi
Not used: C:\Program Files (x86)\Arduino\libraries\WiFi
Multiple libraries were found for "SH1106.h"
Used: C:\Users\Galih Teja\Documents\Arduino\libraries\esp8266-oled-ssd1306-master
Not used: C:\Users\Galih Teja\Documents\Arduino\libraries\ESP8266_and_ESP32_OLED_driver_for_SSD1306_displays
exit status 1
'base64_dec_len' was not declared in this scope