Why is my function breaking (ascii game using curses)? I dont understand why this error persists

Question

The error looks like this:

Traceback (most recent call last):
  File "main.py", line 136, in <module>
    curses.wrapper(main)
  File "/nix/store/p21fdyxqb3yqflpim7g8s1mymgpnqiv7-python3-3.8.12/lib/python3.8/curses/__init__.py", line 105, in wrapper
    return func(stdscr, *args, **kwds)
  File "main.py", line 130, in main
    mainWindow.addstr(0, 0, buildView(windowBorder))
  File "main.py", line 69, in buildView
    newRow += worldRows[charPos[1]][charPos[0]]
IndexError: string index out of range

This program is supposed to take the player position, and print (using curses) the map and the player movement.

If the world DSL looks like this:

world = """
............X.....................................
.......X.......X.......X.........X...........X....
....X......X...X...X...........X.......C.X...X....
.X......X....b...X...X..X...X..X.....X........X...
...X.....................e.............X....X.....
........h..X......X...............................
..............X......X.........X........X...X.....
..X...X.....X....X......X.........................
............X...X......X.......X....d......X......
....X...X.......X...X.....X...........X......X....
.....X....X.X.....X.....X.....X...X...............
..X.X......X.X..a.......................X........
...X...X.........X..X.....g.................X.....
..X.X...X..X....X.........X........f..........X..
..................X....................X..........
"""

and the player's x, y position at start is a tuple (17, 6). The chunk of code constructing the viewport is as follows:

def buildView(border):
    playerView = """"""
    worldRows = [row for row in world.splitlines() if row]
    counterY = -1
    rows = border.splitlines()
    for i, row in enumerate(rows):
        newRow = ""
        if i == 0 or i == len(rows):
            pass
        elif i == 1 or i == len(rows) - 1:
            newRow = row
            newRow += "\n"
        else:
            counterX = -6
            for j, col in enumerate([char for char in row]):
                if col != '#':
                    newRow += col
                else:
                    charPos = (playerPos[0] + counterX,
                               playerPos[1] + counterY)
                    if charPos[0] < 0 or charPos[1] < 0 or charPos[
                            0] > 49 or charPos[1] > 14:
                        newRow += " "
                    else:
                        newRow += worldRows[charPos[1]][charPos[0]]
                    counterX += 1
            newRow += "\n"
        playerView += newRow
        counterY += 1

    temp1 = playerView.splitlines()
    temp2 = [s for s in temp1[2]]
    temp2[7] = "@"
    newtemp = ""
    for i in temp2:
        newtemp += i
    temp2 = newtemp
    temp1[2] = temp2
    thingy = """"""
    for i in temp1:
        thingy += i
        thingy += "\n"
    playerView = thingy
    return playerView

When the program starts, it looks like this:

|=============|
|.X....X......|
|[email protected]|
|.....X...X...|
|=============|

when the player types either w, a, s, or d, the player's xy is updated according to the direction they are moving, but after moving twenty six spaces to the right (player's x coord is += 26), I get the above error. Does anyone see something Im missing?

what I expect to see is this:

|=============|
|......X......|
|[email protected]....|
|.............|
|=============|

and the player's xy coords should be (9, 43). The max xy coord of the world is (49, 14).