So I am attempting the ESP IOT App , firebase project. I am at the part to send data to the database , page 54 , all went well up to this point. Now as I go through the tutorial i have 6 errors that I am not able to get past . I edited the scrip as instructed and got the errors, thinking that I may not have done something incorrect i actuall cut and paste the script , then added my credentials and still got theses errors. 
‘sendData’ was not declared in this scope
identifier “sendData” is undefined
[{
“resource”: “/c:/Users/HP/Documents/PlatformIO/Projects/Monday_test/src/main.cpp”,
“owner”: “cpp”,
“severity”: 8,
“message”: “expected ‘)’ before ‘PrevMillis'”,
“startLineNumber”: 123,
“startColumn”: 81,
“endLineNumber”: 123,
“endColumn”: 81
}]
[{
“resource”: “/c:/Users/HP/Documents/PlatformIO/Projects/Monday_test/src/main.cpp”,
“owner”: “C/C++”,
“code”: “18”,
“severity”: 8,
“message”: “expected a ‘)'”,
“source”: “C/C++”,
“startLineNumber”: 124,
“startColumn”: 1,
“endLineNumber”: 124,
“endColumn”: 11
}]
[{
“resource”: “/c:/Users/HP/Documents/PlatformIO/Projects/Monday_test/src/main.cpp”,
“owner”: “cpp”,
“severity”: 8,
“message”: “expected ‘)’ before ‘}’ token”,
“startLineNumber”: 134,
“startColumn”: 3,
“endLineNumber”: 134,
“endColumn”: 3
}]
[{
“resource”: “/c:/Users/HP/Documents/PlatformIO/Projects/Monday_test/src/main.cpp”,
“owner”: “cpp”,
“severity”: 8,
“message”: “expected primary-expression before ‘}'”,
“startLineNumber”: 135,
“startColumn”: 1,
“endLineNumber”: 135,
“endColumn”: 1
}]