Album creation error

[Joe-hun]

Hello! I am trying to make albums from photos wich are not yet in one, but is running in error:
What is the problem? THX

[12:38:40] Found 300 items
[12:38:40] SyntaxError: "undefined" is not valid JSON at JSON.parse () at Api.makeApiRequest (chrome-extension://dhdgffkkebhmkfjojejmpbldmpobfkfo/userscript.html?name=Google-Photos-Toolkit.user.js&id=dc8ae674-ede8-496e-ab7b-39e7b661b2ad:1294:31) at async Api.getAlbumPage (chrome-extension://dhdgffkkebhmkfjojejmpbldmpobfkfo/userscript.html?name=Google-Photos-Toolkit.user.js&id=dc8ae674-ede8-496e-ab7b-39e7b661b2ad:1511:26) at async ApiUtils.getAllItems (chrome-extension://dhdgffkkebhmkfjojejmpbldmpobfkfo/userscript.html?name=Google-Photos-Toolkit.user.js&id=dc8ae674-ede8-496e-ab7b-39e7b661b2ad:2071:22) at async ApiUtils.getAllMediaInAlbum (chrome-extension://dhdgffkkebhmkfjojejmpbldmpobfkfo/userscript.html?name=Google-Photos-Toolkit.user.js&id=dc8ae674-ede8-496e-ab7b-39e7b661b2ad:2094:14) at async chrome-extension://dhdgffkkebhmkfjojejmpbldmpobfkfo/userscript.html?name=Google-Photos-Toolkit.user.js&id=dc8ae674-ede8-496e-ab7b-39e7b661b2ad:2768:33
[12:38:40] Found 40 items