pyocrを使おうとするとエラーが起きます。

raise TesseractError(status, errors)
pyocr.error.TesseractError: (1, b'Error opening data file /usr/local/share/tessdata/jpn.traineddata\nPlease make sure the TESSDATA_PREFIX environment variable is set to your "tessdata" directory.\nFailed loading language \'jpn\'\nTesseract couldn\'t load any languages!\nCould not initialize tesseract.\n')

#***には名前が入ります。
#色々書いてるので見にくいと思います。すいません。

import pyautogui as pag
import pyocr
from PIL import Image
import sys
import subprocess

import pyperclip
import os
import time
from pyscreeze import ImageNotFoundException 

CLOSE_BUTTON_X = 13
CLOSE_BUTTON_Y = 40

acr_path = '/Applications/Adobe Acrobat Reader DC.app'
todekede_path = '/Users/***/Downloads/lec_rpa/todokede_data/'

todokede_list = os.listdir(todekede_path)

NAME_W = 500

def detect_name_posi():
    pag.moveTo(1, 1)
    for count in range(50):
        try:
            #x, y, w, h = pag.locateOnScreen('/Users/***/Desktop/lec_rpa/shimei.png')
            x, y, w, h = pag.locateOnScreen('/Users/***/Downloads/lec_rpa/pdf_icon.png')
            break
        except ImageNotFoundException:
            time.sleep(1)
    return x, y, w, h


def get_name_img(x, y, w, h, NAME_W):
    start_x = 1350
    start_y = 1222
    name_img = pag.screenshot(region=(start_x, start_y, 350, 70))
    return name_img

def run_ocr(tool, name_img):
    result = tool.image_to_string(name_img, lang='jpn')
    result = result.replace(' ', '')
    print(result)
    return result


if __name__ == '__main__':
    tools = pyocr.get_available_tools()
    if len(tools) == 0:
        print("No OCR tool found")
        sys.exit(1)
    tool = tools[0]


    for idx, file in enumerate(todokede_list):
        print('open:', file)

        pdf_pro = subprocess.Popen(['open', acr_path, todekede_path+file])
        time.sleep(1)   

        x, y, w, h = detect_name_posi()
        print("start_x, start_y, NAME_W, 400") 

        name_img = get_name_img(677, 616, 200, 400, 200)

        result = run_ocr(tool, name_img)

        pag.click(CLOSE_BUTTON_X, CLOSE_BUTTON_Y)
        time.sleep(1) 

        if idx == 0:
            break