[Solved] Skoda Octavia II 1.6 fsi 2007 - Error P0016 The engine indicator light is on

Hello. I have a problem with my Skoda Octavia II1.6 FSI. The engine light came on, I went to the mechanic and after connecting the computer, Error P00016 appeared. Camshaft and crankshaft position sensor. After clearing the error, this error still appears. As far as I know, the reason could be a loose timing chain. Does anyone have a diagram or film how to replace this timing? Unless that's another reason.
Please help.

The search lasted 6 seconds.
https://www.youtube.com/watch?v=1UBMh88krF8

thanks but I saw him. this video does not show how to pull the gears, especially the bottom one and the variator. I also need the pattern he has on his computer.

Next 6 seconds of searching.
https://workshop-manuals.com/audi/a1/power_un...r_head/removing_and_installing_cylinder_head/

It turned out that the timing chain was stretched. cost about 1900 including oil change. Skodzinka is already flashing

It turned out that the timing chain was stretched. cost about 1900 including oil change. Skodzinka is already flashing

Added after 2 [minutes]:

The car went to the mechanic, changed the timing gear and now Skodzinka is flying. The cost is about PLN 2,000