I had similar problems on Puzzle 1905, but the
log.txt files it made were only about 2-25 Gbytes.
Nevertheless, such files were large enough to give
unresponsive Foldit clients that I chose to quit
and restart.
My hunch is that the large log.txt files occurred
when Recipes tried to execute LUA commands like:
save.LoadSolution or save.LoadSolutionByName
as described at:
https://foldit.fandom.com/wiki/Foldit_Lua_Functions#save.LoadSolution
Loading the same solution files manually caused
no such problems.
The same Recipes have worked before on other Foldit
Puzzles like 1829 and 1847. Puzzle 1905 contained
several cuts, like the ones between segments 34-35,
64-65, 103-104, and 113-114. Each of these cuts gave
a group of 3 lines in log.txt like below:
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 34-1, 34-2, 34-3, 35-1!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 34-2, 34-3, 35-1, 35-2!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 34-3, 35-1, 35-2, 35-3!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 64-1, 64-2, 64-3, 65-1!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 64-2, 64-3, 65-1, 65-2!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 64-3, 65-1, 65-2, 65-3!
...
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 103-1, 103-2, 103-3, 104-1!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 103-2, 103-3, 104-1, 104-2!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 103-3, 104-1, 104-2, 104-3!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 113-1, 113-2, 113-3, 114-1!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 113-2, 113-3, 114-1, 114-2!
core.kinematics.AtomTree: [ ERROR ] No proper DoF can be found for these four atoms: 113-3, 114-1, 114-2, 114-3!
Such groups of lines occurred repeatedly in the
log.txt file, making it grow quickly in size.
I'm guessing that each line above is for a different
dihedral angle among backbone atoms 1-3 (1=nitrogen,
2=alpha-carbon, and 3=carbon on the C=O group). Maybe
2 of these dihedrals are on the Ramachandran Map, and
the 3rd distinguishes cis from trans peptide bonds.
When there are cuts, these 3 dihedral angles become
ill-defined, giving log.txt messages like above.
If you can track down this bug and fix it, I would
appreciate it.